Adds link to waterfall on main page

R=jamesr@chromium.org
BUG=none

Review URL: https://codereview.chromium.org/681783003

README.md

diff --git a/README.md b/README.md
index ecc47e8..946dad1 100644
--- a/README.md
+++ b/README.md
@@ -41,4 +41,12 @@
 Run the tests:
 ```
 mojo/tools/mojob.sh test
-```
\ No newline at end of file
+```
+
+
+To land a patch:
+```
+$ git cl land
+```
+
+Don't break build! Waterfall is here: http://build.chromium.org/p/client.mojo/waterfall .