Updated changelog

Author: gfosco

CHANGELOG.md

@@ -2,7 +2,8 @@
 
 ### 2.2.4 (3/29/2016)
 
-* Hotfix: fixed imports issue for S3Adapter, GCSAdapter, FileSystemAdapter
+* Hotfix: fixed imports issue for S3Adapter, GCSAdapter, FileSystemAdapter [\#1263](https://github.com/ParsePlatform/parse-server/pull/1263) ([drew-gross](https://github.com/drew-gross)
+* Fix: Clean null authData values on _User update [\#1199](https://github.com/ParsePlatform/parse-server/pull/1199) ([yuzeh](https://github.com/yuzeh))
 
 ### 2.2.3 (3/29/2016)