foo
diff --git a/sky/SDK.md b/sky/SDK.md
index f70a03c..76e8cd9 100644
--- a/sky/SDK.md
+++ b/sky/SDK.md
@@ -6,34 +6,41 @@
 both likely to change in incompatible ways several times, but if you're
 interested in trying out the system, this document can help you get started.
 
+Set up your computer
+--------------------
+
+1. Install the Dart SDK:
+  - https://www.dartlang.org/tools/download.html
+
+2. Install the ``adb`` tool from the Android SDK:
+  - https://developer.android.com/sdk/installing/index.html
+
+3. Install the Sky SDK:
+  - ``git clone https://github.com/domokit/sky_sdk.git``
+
+4.  Ensure sure $DART_SDK is set to the path of your Dart SDK and 'adb'
+    (inside 'platform-tools' in the android sdk) is in your $PATH.
+
+
 Set up your device
 ------------------
 
 Currently Sky requires an Android device running the Lollipop (or newer) version
 of the Android operating system.
 
-1. Install ``Sky`` on your device by via the Play Store. The Sky app on your
-   device is capable of displaying applications written using Sky.
-
-2. Enable developer mode on your device by visiting ``Settings > About phone``
+1. Enable developer mode on your device by visiting ``Settings > About phone``
    and tapping the ``Build number`` field five times.
 
-3. Enable ``USB debugging`` in ``Settings > Developer options``.
-
-Set up your computer
---------------------
-
-1. Install the ``adb`` tool from the Android SDK.
-  - Mac: ``brew install android-platform-tools``
-  - Linux: ``sudo apt-get install android-tools-adb``
-
-2. Download the Sky framework:
-  - ``git clone https://github.com/domokit/sky-sdk.git``
+2. Enable ``USB debugging`` in ``Settings > Developer options``.
 
 3. Using a USB cable, plug your phone into your computer. If prompted on your
    device, authorize your computer to access your device.
 
+
 Running a Sky application
 -------------------------
 
-1. ``/path/to/sky-sdk/shelldb myapp.sky && adb logcat``
+1. ``sky_sdk/bin/sky --install sky_sdk/examples/index.sky``
+   The --install flag is only necessary the first time to install SkyDemo.apk.
+
+2.  Use ``adb logcat`` to view any errors or Dart print() output from the app.
\ No newline at end of file
diff --git a/sky/engine/core/script/dart_loader.cc b/sky/engine/core/script/dart_loader.cc
index 62a72ea..19a878e 100644
--- a/sky/engine/core/script/dart_loader.cc
+++ b/sky/engine/core/script/dart_loader.cc
@@ -26,11 +26,12 @@
                             Dart_Handle library,
                             Dart_Handle url) {
   String string = StringFromDart(url);
+  String original = string;
   if (string.startsWith("dart:") || string.startsWith("mojo:"))
     return url;
   // TODO(dart): Figure out how 'package:' should work in sky.
   if (string.startsWith("package:")) {
-    string.replace("package:", "/gen/");
+    string.replace("package:", "/packages/");
   }
   String library_url_string = StringFromDart(Dart_LibraryUrl(library));
   KURL library_url = KURL(ParsedURLString, library_url_string);
diff --git a/sky/framework/components/icon.dart b/sky/framework/components/icon.dart
index 3b0f9d0..b37bd4c 100644
--- a/sky/framework/components/icon.dart
+++ b/sky/framework/components/icon.dart
@@ -4,7 +4,8 @@
 
 import '../fn.dart';
 
-const String kAssetBase = '/sky/assets/material-design-icons';
+// TODO(eseidel): This should use package:.
+const String kAssetBase = '/packages/sky/assets/material-design-icons';
 
 class Icon extends Component {
   List<Style> styles;
diff --git a/sky/sdk/README.md b/sky/sdk/README.md
new file mode 100644
index 0000000..32bbe5f
--- /dev/null
+++ b/sky/sdk/README.md
@@ -0,0 +1,7 @@
+Sky SDK
+
+This repository is autogenerated by:
+https://github.com/domokit/mojo/tree/master/sky/tools/deploy_sdk.py
+
+To add files, add them to:
+https://github.com/domokit/mojo/tree/master/sky/sdk
diff --git a/sky/sdk/packages/mojo/pubspec.yaml b/sky/sdk/packages/mojo/pubspec.yaml
new file mode 100644
index 0000000..289a1d3
--- /dev/null
+++ b/sky/sdk/packages/mojo/pubspec.yaml
@@ -0,0 +1 @@
+name: mojo
diff --git a/sky/sdk/packages/sky/pubspec.yaml b/sky/sdk/packages/sky/pubspec.yaml
new file mode 100644
index 0000000..b3456c9
--- /dev/null
+++ b/sky/sdk/packages/sky/pubspec.yaml
@@ -0,0 +1,4 @@
+name: sky
+dependencies:
+  mojo:
+    path: ../mojo
diff --git a/sky/sdk/tools/download_material_design_icons b/sky/sdk/tools/download_material_design_icons
new file mode 100755
index 0000000..fd08a1d
--- /dev/null
+++ b/sky/sdk/tools/download_material_design_icons
@@ -0,0 +1,35 @@
+#!/usr/bin/env python
+# Copyright (c) 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import os
+import subprocess
+
+from webkitpy.common.system import filesystem
+from webkitpy.common.webkit_finder import WebKitFinder
+
+finder = WebKitFinder(filesystem.FileSystem())
+
+assets_dir = finder.path_from_chromium_base('sky', 'assets')
+sha1_path = os.path.join(assets_dir, 'material-design-icons.sha1')
+
+with open(sha1_path) as f:
+    sha1 = f.read()
+
+tgz_path = os.path.join(assets_dir, 'material-design-icons.tgz')
+subprocess.call([
+    'download_from_google_storage',
+    '--no_resume',
+    '--no_auth',
+    '--bucket', 'mojo',
+    '--output', tgz_path,
+    'material-design-icons/%s' % sha1,
+])
+
+output_path = os.path.join(assets_dir, tgz_path)
+subprocess.call([
+    'tar', '-xzf', output_path, '-C', assets_dir
+])
+
+os.unlink(tgz_path)
diff --git a/sky/sdk/tools/sky b/sky/sdk/tools/sky
new file mode 100755
index 0000000..6890876
--- /dev/null
+++ b/sky/sdk/tools/sky
@@ -0,0 +1,254 @@
+#!/usr/bin/env python
+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import argparse
+import json
+import logging
+import os
+import subprocess
+import sys
+import urlparse
+import socket
+
+SDK_TOOLS_DIR = os.path.dirname(os.path.abspath(__file__))
+SDK_ROOT = os.path.dirname(SDK_TOOLS_DIR)
+
+SKY_SERVER_PORT = 9888
+DEFAULT_URL = os.path.join(SDK_ROOT, "examples/index.sky")
+APK_NAME = 'SkyDemo.apk'
+ANDROID_PACKAGE = "org.domokit.sky.demo"
+# FIXME: This assumes adb is in $PATH, we could look for ANDROID_HOME, etc?
+ADB_PATH = 'adb'
+
+PID_FILE_PATH = "/tmp/skydemo.pids"
+PID_FILE_KEYS = frozenset([
+    'remote_sky_server_port',
+    'sky_server_pid',
+    'sky_server_port',
+    'sky_server_root',
+    'build_dir',
+])
+
+
+def _port_in_use(port):
+    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    return sock.connect_ex(('localhost', port)) == 0
+
+
+# We need something to serve sky files, python's httpserver is sufficient.
+def _start_http_server(port, root):
+    server_command = [
+        'python', '-m', 'SimpleHTTPServer', str(port),
+    ]
+    return subprocess.Popen(server_command, cwd=root).pid
+
+
+# This 'strict dictionary' approach is useful for catching typos.
+class Pids(object):
+    def __init__(self, known_keys, contents=None):
+        self._known_keys = known_keys
+        self._dict = contents if contents is not None else {}
+
+    def __len__(self):
+        return len(self._dict)
+
+    def get(self, key, default=None):
+        assert key in self._known_keys, '%s not in known_keys' % key
+        return self._dict.get(key, default)
+
+    def __getitem__(self, key):
+        assert key in self._known_keys, '%s not in known_keys' % key
+        return self._dict[key]
+
+    def __setitem__(self, key, value):
+        assert key in self._known_keys, '%s not in known_keys' % key
+        self._dict[key] = value
+
+    def __delitem__(self, key):
+        assert key in self._known_keys, '%s not in known_keys' % key
+        del self._dict[key]
+
+    def __iter__(self):
+        return iter(self._dict)
+
+    def __contains__(self, key):
+        assert key in self._known_keys, '%s not in allowed_keys' % key
+        return key in self._dict
+
+    def clear(self):
+        self._dict = {}
+
+    def pop(self, key, default=None):
+        assert key in self._known_keys, '%s not in known_keys' % key
+        return self._dict.pop(key, default)
+
+    @classmethod
+    def read_from(cls, path, known_keys):
+        contents = {}
+        try:
+            with open(path, 'r') as pid_file:
+                contents = json.load(pid_file)
+        except:
+            if os.path.exists(path):
+                logging.warn('Failed to read pid file: %s' % path)
+        return cls(known_keys, contents)
+
+    def write_to(self, path):
+        try:
+            with open(path, 'w') as pid_file:
+                json.dump(self._dict, pid_file, indent=2, sort_keys=True)
+        except:
+            logging.warn('Failed to write pid file: %s' % path)
+
+
+def _url_for_path(port, root, path):
+    relative_path = os.path.relpath(path, root)
+    return 'sky://localhost:%s/%s' % (port, relative_path)
+
+
+class StartSky(object):
+    def add_subparser(self, subparsers):
+        start_parser = subparsers.add_parser('start',
+            help='launch SKyShell.apk on the device')
+        start_parser.add_argument('--install', action='store_true')
+        start_parser.add_argument('project_or_path', nargs='?', type=str,
+            default='main.sky')
+        start_parser.set_defaults(func=self.run)
+
+    def run(self, args, pids):
+        if args.install:
+            apk_path = os.path.join(SDK_ROOT, 'apks', APK_NAME)
+            if not os.path.exists(apk_path):
+                print "'%s' does not exist?" % apk_path
+                return 2
+
+            subprocess.check_call([ADB_PATH, 'install', '-r', apk_path])
+
+        project_or_path = os.path.abspath(args.project_or_path)
+
+        if os.path.isdir(project_or_path):
+            sky_server_root = project_or_path
+            main_sky = os.path.join(project_or_path, 'main.sky')
+            missing_msg = "Missing main.sky in project: %s" % sky_server_root
+        else:
+            sky_server_root = os.path.dirname(project_or_path)
+            main_sky = project_or_path
+            missing_msg = "%s does not exist." % main_sky
+
+        if not os.path.isfile(main_sky):
+            print missing_msg
+            return 2
+
+        sky_server_port = SKY_SERVER_PORT
+        pids['sky_server_port'] = sky_server_port
+        if _port_in_use(sky_server_port):
+            logging.warn(('Port %s already in use. '
+            ' Not starting server for %s') % (sky_server_port, sky_server_root))
+        else:
+            sky_server_pid = _start_http_server(sky_server_port, sky_server_root)
+            pids['sky_server_pid'] = sky_server_pid
+            pids['sky_server_root'] = sky_server_root
+
+        port_string = 'tcp:%s' % sky_server_port
+        subprocess.check_call([
+            ADB_PATH, 'reverse', port_string, port_string
+        ])
+        pids['remote_sky_server_port'] = sky_server_port
+
+        # The load happens on the remote device, use the remote port.
+        sky_url = _url_for_path(pids['remote_sky_server_port'], sky_server_root,
+            main_sky)
+
+        subprocess.check_call([ADB_PATH, 'shell',
+            'am', 'start',
+            '-a', 'android.intent.action.VIEW',
+            '-d', sky_url])
+
+
+class StopSky(object):
+    def add_subparser(self, subparsers):
+        stop_parser = subparsers.add_parser('stop',
+            help=('kill all running SkyShell.apk processes'))
+        stop_parser.set_defaults(func=self.run)
+
+    def _kill_if_exists(self, pids, key, name):
+        pid = pids.pop(key, None)
+        if not pid:
+            logging.info('No pid for %s, nothing to do.' % name)
+            return
+        logging.info('Killing %s (%d).' % (name, pid))
+        try:
+            os.kill(pid, signal.SIGTERM)
+        except OSError:
+            logging.info('%s (%d) already gone.' % (name, pid))
+
+    def run(self, args, pids):
+        self._kill_if_exists(pids, 'sky_server_pid', 'sky_server')
+
+        if 'remote_sky_server_port' in pids:
+            port_string = 'tcp:%s' % pids['remote_sky_server_port']
+            subprocess.call([ADB_PATH, 'reverse', '--remove', port_string])
+
+        subprocess.call([
+            ADB_PATH, 'shell', 'am', 'force-stop', ANDROID_PACKAGE])
+
+        pids.clear()
+
+
+# TODO(eseidel): I'm not quite sure what to do about the bindings paths yet.
+class Analyze(object):
+    def add_subparser(self, subparsers):
+        analyze_parser = subparsers.add_parser('analyze',
+            help=('run the dart analyzer with sky url mappings'))
+        analyze_parser.add_argument('app_path', type=str)
+        analyze_parser.set_defaults(func=self.run)
+
+    def run(self, args, pids):
+        DART_SDK_PATH = os.env.get('DART_SDK')
+        if DART_SDK_PATH is None or not os.path.exists(DART_SDK_PATH):
+            print ("Can't find dart-sdk at %s. "
+                "Did you set DART_SDK in the environment?") % DART_SDK_PATH
+            return 2
+
+        ANALYZER_PATH = os.path.join(DART_SDK_PATH, 'bin/dartanalyzer')
+
+        build_dir = os.path.abspath(pids['build_dir'])
+        bindings_path = os.path.join(build_dir, 'gen/sky/bindings')
+        sky_builtin_path = \
+            os.path.join(SRC_ROOT, 'sky/engine/bindings/builtin.dart')
+        dart_sky_path = os.path.join(bindings_path, 'dart_sky.dart')
+        mojo_bindings_path = \
+            os.path.join(SRC_ROOT, 'mojo/public/dart/bindings.dart')
+        mojo_core_path = os.path.join(SRC_ROOT, 'mojo/public/dart/core.dart')
+        analyzer_args = [ANALYZER_PATH,
+            "--url-mapping=dart:sky,%s" % dart_sky_path,
+            "--url-mapping=dart:sky_builtin,%s" % sky_builtin_path,
+            "--url-mapping=mojo:bindings,%s" % mojo_bindings_path,
+            "--url-mapping=mojo:core,%s" % mojo_core_path,
+            args.app_path
+        ]
+        subprocess.call(analyzer_args)
+
+
+class SkyShellRunner(object):
+    def main(self):
+        logging.basicConfig(level=logging.WARNING)
+
+        parser = argparse.ArgumentParser(description='Sky Demo Runner')
+        subparsers = parser.add_subparsers(help='sub-command help')
+
+        for command in [StartSky(), StopSky()]:
+            command.add_subparser(subparsers)
+
+        args = parser.parse_args()
+        pids = Pids.read_from(PID_FILE_PATH, PID_FILE_KEYS)
+        exit_code = args.func(args, pids)
+        # We could do this with an at-exit handler instead?
+        pids.write_to(PID_FILE_PATH)
+        sys.exit(exit_code)
+
+
+if __name__ == '__main__':
+    SkyShellRunner().main()
diff --git a/sky/tools/deploy_sdk.py b/sky/tools/deploy_sdk.py
new file mode 100755
index 0000000..f499bac
--- /dev/null
+++ b/sky/tools/deploy_sdk.py
@@ -0,0 +1,156 @@
+#!/usr/bin/env python
+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import argparse
+import logging
+import os
+import shutil
+import subprocess
+import sys
+
+SKY_TOOLS_DIR = os.path.dirname(os.path.abspath(__file__))
+SKY_DIR = os.path.dirname(SKY_TOOLS_DIR)
+SRC_ROOT = os.path.dirname(SKY_DIR)
+
+
+def git_revision():
+    return subprocess.check_output(['git', 'rev-parse', 'HEAD']).strip()
+
+
+def mojo_filter(path):
+    if not os.path.isfile(path):
+        return False
+    _, ext = os.path.splitext(path)
+    if ext != '.mojo':
+        return False
+    return 'apptests' not in os.path.basename(path)
+
+
+def gen_filter(path):
+    if os.path.isdir(path):
+        return True
+    _, ext = os.path.splitext(path)
+    # Don't include all .dart, just .mojom.dart.
+    return path.endswith('.mojom.dart')
+
+def dart_filter(path):
+    if os.path.isdir(path):
+        return True
+    _, ext = os.path.splitext(path)
+    # .dart includes '.mojom.dart'
+    return ext == '.dart'
+
+
+def sky_or_dart_filter(path):
+    if os.path.isdir(path):
+        return True
+    _, ext = os.path.splitext(path)
+    # .dart includes '.mojom.dart'
+    return ext == '.sky' or ext == '.dart'
+
+
+def ensure_dir_exists(path):
+    if not os.path.exists(path):
+        os.makedirs(path)
+
+
+def copy(from_root, to_root, filter_func=None):
+    ensure_dir_exists(to_root)
+
+    for root, dirs, files in os.walk(from_root):
+        # filter_func expects paths not names, so wrap it to make them absolute.
+        wrapped_filter = None
+        if filter_func:
+            wrapped_filter = lambda name: filter_func(os.path.join(root, name))
+
+        for name in filter(wrapped_filter, files):
+            from_path = os.path.join(root, name)
+            root_rel_path = os.path.relpath(from_path, from_root)
+            to_path = os.path.join(to_root, root_rel_path)
+            to_dir = os.path.dirname(to_path)
+            if not os.path.exists(to_dir):
+                os.makedirs(to_dir)
+            shutil.copy(from_path, to_path)
+
+        dirs[:] = filter(wrapped_filter, dirs)
+
+
+def confirm(prompt):
+    response = raw_input('%s [N]|y: ' % prompt)
+    return response and response.lower() == 'y'
+
+
+def delete_all_non_hidden_files_in_directory(root):
+    to_delete = [os.path.join(root, p)
+        for p in os.listdir(root) if not p.startswith('.')]
+    if not confirm('This will delete everything in %s:\n%s\nAre you sure?' % (
+        root, '\n'.join(to_delete))):
+        print 'User aborted.'
+        sys.exit(2)
+
+    for path in to_delete:
+        if os.path.isdir(path):
+            shutil.rmtree(path)
+        else:
+            os.remove(path)
+
+
+def main():
+    logging.basicConfig(level=logging.WARN)
+    parser = argparse.ArgumentParser(description='Deploy a new sky_sdk.')
+    parser.add_argument('sdk_root', type=str)
+    args = parser.parse_args()
+
+    # Always use android release?
+    rel_build_dir = os.path.join('out', 'android_Release')
+    build_dir = os.path.join(SRC_ROOT, rel_build_dir)
+    sdk_root = os.path.abspath(args.sdk_root)
+
+    def sdk_path(rel_path):
+        return os.path.join(sdk_root, rel_path)
+
+    def src_path(rel_path):
+        return os.path.join(SRC_ROOT, rel_path)
+
+    delete_all_non_hidden_files_in_directory(sdk_root)
+
+    # Manually clear sdk_root above to avoid deleting dot-files.
+    copy(src_path('sky/sdk'), sdk_root)
+
+    copy(src_path('sky/examples'), sdk_path('examples'),
+        sky_or_dart_filter)
+
+    # Sky package
+    copy(src_path('sky/framework'), sdk_path('packages/sky/lib/framework'),
+        sky_or_dart_filter)
+    copy(src_path('sky/assets'), sdk_path('packages/sky/lib/assets'))
+    copy(os.path.join(build_dir, 'gen/sky'), sdk_path('packages/sky/lib'),
+        gen_filter)
+
+    # Mojo package
+    copy(src_path('mojo'), sdk_path('packages/mojo'), dart_filter)
+    copy(os.path.join(build_dir, 'gen/mojo'), sdk_path('packages/mojo/lib'),
+        gen_filter)
+
+
+    ensure_dir_exists(sdk_path('apks'))
+    shutil.copy(os.path.join(build_dir, 'apks', 'SkyShell.apk'),
+        sdk_path('apks'))
+
+
+    with open(sdk_path('LICENSES.sky'), 'w') as license_file:
+        subprocess.check_call([src_path('tools/licenses.py'), 'credits'],
+            stdout=license_file)
+
+
+    subprocess.check_call(['git', 'add', '.'], cwd=sdk_root)
+    subprocess.check_call([
+        'git', 'commit',
+        '-m', '%s from %s' % (rel_build_dir, git_revision())
+        ], cwd=sdk_root)
+
+
+if __name__ == '__main__':
+    main()