More entries to CHANGELOG. Version to rc1

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

CHANGELOG

@@ -19,6 +19,7 @@ v 6.5.0
   - Search autocomplete via ajax
   - Add website url to user profile
   - Files API supports base64 encoded content (sponsored by O'Reilly Media)
+  - Added support for Go's repository retrieval (Bruno Albuquerque)
 
 v6.4.3
   - Don't use unicorn worker killer if PhusionPassenger is defined

VERSION

-6.5.0.pre
+6.5.0.rc1