Update README

README

@@ -1,7 +1,9 @@
 Collection+JSON Media Type
 
 This repo is a 'stub' for issues surrounding the development and maintenance of the Collection+JSON media type.
-See: http://amundsen.com/media-types/collection/
+See: 
+Specification: http://amundsen.com/media-types/collection/
+Discussion Group: https://groups.google.com/forum/?fromgroups#!forum/collectionjson
 
 Feel free to log issues here right now.
 I'll also post the spec here to allow fork and pull.