Update CHANGELOG

Author: minggo

CHANGELOG

@@ -27,7 +27,7 @@ cocos2d-2.0-x-2.0.4 @Nov.2 2012
     Bug       #1526: fix a bug that javascript binding related samples will crash on iOS devices
     Feature   #1469: add MoonWarriors as a sample game
     Refactor  #1487: use shared javascript test cases with cocos2d-html5 and cocos2d-iphone
-    Refactor  #1517: upgrade SpiderMonkey to FF 16.0.1
+    Refactor  #1517: upgrade SpiderMonkey to FF 17.0 beta3
  [lua binding]
     Bug       #1506: fix a compilation error of TestLua if the path of cocos2d-x contains spaces  
  [win32]