Prepare v0.3.1 release

Author: clue

CHANGELOG.md

@@ -4,6 +4,11 @@ This file is a manually maintained list of changes for each release. Feel free
 to add your changes here when sending pull requests. Also send corrections if
 you spot any mistakes.
 
+## 0.3.1 (2014-09-27)
+
+* Support React PHP v0.4 (while preserving BC with React PHP v0.3)
+  (#4)
+
 ## 0.3.0 (2013-06-24)
 
 * BC break: Switch from (deprecated) `clue/connection-manager` to `react/socket-client`