Add selected image to slider
Merge branch 'develop' into fix-extensions-slider
fix cc
Merge branch 'develop' into fix-extensions-slider
Merge pull request #4075 from v1ctor/fix-extensions-slider

closed #3615: ControlSlider doesn't support setting selected thumb sprite
Update AUTHORS [ci skip]
Update CHANGELOG [ci skip]
[AUTO] : updating submodule reference to latest autogenerated bindings
Merge pull request #4996 from CocosRobot/updategeneratedsubmodule_1389236390

[AUTO] : updating submodule reference to latest autogenerated bindings
Merge branch 'develop' into develop_nutty_modify_framework_removeuselesssample