issue #1489:clear version code before getting it
Merge branch 'iss1489-AssetsManager' of https://github.com/minggo/cocos2d-x into iss1489-AssetsManager
fixed #1750: [iOS] CCEditBox's position is incorrect when it's added to a non-fullscreen CCNode.
Merge pull request #2045 from dumganhar/iss1750-editbox-pos

fixed #1750: [iOS] CCEditBox's position is incorrect when it's added to a non-fullscreen CCNode.
fix a bug of CCUserDefault
fixed #1489:sample works ok
Merge pull request #2047 from minggo/iss1489-AssetsManager

assets manager works ok