add umengshare share image introduce
modify umengshare comment
modify umengshare for support share image without text
Merge branch 'master' of github.com:htlxyz/quick-cocos2d-x

Conflicts:
	lib/sdk/umeng_share/umeng_share_android/umeng_share_android/com/quick2dx/sdk/UmengShareSDK.java
porting ccsloader form v3quick
Merge branch 'develop'
Merge branch 'master' of github.com:htlxyz/quick-cocos2d-x
Merge pull request #410 from htlxyz/master

Master