Merge pull request #152 from htlxyz/v3quick_develop

modify scrollview&ccsloader
Fixed #139 and #149
Merge pull request #153 from htlxyz/v3quick_develop

make uibutton support flip
Merge pull request #154 from htlxyz/v3quick_develop

modify uibutton flip
Merge pull request #155 from htlxyz/v3quick_develop

modify flipX
Merge branch 'v3quick_develop' of github.com:dualface/cocos2d-x into v3quick_develop