updated CHANGELOG for 2.1.2

CHANGELOG-2.1.md

@@ -7,6 +7,13 @@ in 2.1 minor versions.
 To get the diff for a specific change, go to https://github.com/symfony/symfony/commit/XXX where XXX is the change hash
 To get the diff between two versions, go to https://github.com/symfony/symfony/compare/v2.1.0...v2.1.1
 
+* 2.1.2 (2012-09-20)
+
+ * 7bafc69: Add a Sigchild compatibility mode (set to false by default)
+ * 8dd19d8: fix Fatal error: Cannot access private property
+ * 3269014: Added Bulgarian translation
+ * de6658b: [Profiler]Use the abstract method to get client IP
+
 * 2.1.1 (2012-09-11)
 
  * fix Composer configuration