Merge pull request #163 from htlxyz/v3quick_develop

make scrollview
fix content length exceeds the edit box area
Merge pull request #164 from htlxyz/v3quick_develop

modify ccsScene loader
Update UIScrollView.lua

优化代码！
Merge pull request #168 from vlikewater/patch-3

Update UIScrollView.lua
Merge branch 'v3quick_develop' of github.com:dualface/cocos2d-x into v3quick_develop
modify code