Mention mailing list in docs (#5168)

benjaoming · web-flow · commit 3a5fba91327c · 2016-06-17T21:10:42.000+02:00
diff --git a/README.rst b/README.rst
@@ -54,6 +54,7 @@ Connect
 
 - IRC: **#kalite** on Freenode
 - Twitter: `@kalite <http://twitter.com/kalite>`__
+- Mailing list: `dev@learningequality.org on Google Groups <https://groups.google.com/a/learningequality.org/forum/#!forum/dev>`__
 
 Contact Us
 ^^^^^^^^^^
