Add cpp14 examples to distribution.

asio/src/Makefile.am

diff --git a/asio/src/Makefile.am b/asio/src/Makefile.am
index 48c3eac..c308ea0 100644
--- a/asio/src/Makefile.am
+++ b/asio/src/Makefile.am
@@ -4,7 +4,7 @@
 SUBDIRS = examples/cpp03 tests
 endif
 
-DIST_SUBDIRS = examples/cpp03 examples/cpp11 tests
+DIST_SUBDIRS = examples/cpp03 examples/cpp11 examples/cpp14 tests
 
 EXTRA_DIST = \
 	Makefile.mgw \