Updated changelog

CHANGELOG.md

@@ -12,6 +12,7 @@
 
 **Backend**
 - [Issue #1905](https://github.com/grafana/grafana/issues/1905). Github OAuth: You can now configure a Github team membership requirement, thx @dewski
+- [Issue #2052](https://github.com/grafana/grafana/issues/2052). Github OAuth: You can now configure a Github organization requirement, thx @indrekj
 - [Issue #1891](https://github.com/grafana/grafana/issues/1891). Security: New config option to disable the use of gravatar for profile images
 - [Issue #1921](https://github.com/grafana/grafana/issues/1921). Auth: Support for user authentication via reverse proxy header (like X-Authenticated-User, or X-WEBAUTH-USER)
 - [Issue #960](https://github.com/grafana/grafana/issues/960).   Search: Backend can now index a folder with json files, will be available in search (saving back to folder is not supported, this feature is meant for static generated json dashboards)