Merge pull request #183 from cluelessjoe/master

Adds link to Flight example git repo

Author: angus-c

README.md

@@ -9,7 +9,7 @@ created at Twitter, and is used by the [twitter.com](https://twitter.com/) and
 
 * [Website](http://flightjs.github.io/)
 * [API documentation](doc/README.md)
-* [Flight example app](http://flightjs.github.io/example-app/)
+* [Flight example app](http://flightjs.github.io/example-app/) ([Source](https://github.com/flightjs/example-app))
 * [Flight's Google Group](https://groups.google.com/forum/?fromgroups#!forum/twitter-flight)
 * [Flight on Twitter](https://twitter.com/flight)