issue cocos2d#2264: updated changelog

Author: linshun

CHANGELOG.txt

@@ -2,7 +2,7 @@ Cocos2d-html5-v2.1.4 @ Jun.12, 2013
 * Added support for Multi resources loading
 * Performance optimization for sprite performance tests 220%
 * Sync audio api to JSB
-* Added auto test for NodeTests
+* Added auto test for NodeTests and TilemapTests
 * Changed textureKeyName to full path when removeTextureForKey
 * Added support for particle batch node