update for lay out
remove the float type "f" postfix in /simple_shadow.frag
update for lay out samples
reset widget chaned
reset unused format changed
update for widget percent position and size logic
update object reader for new lay out system
update lay out reader and samples
remote unuseful format
update for code format
Merge branch 'UILayout' into UILayout_Widget
Merge branch 'UILayout_Widget' into UILayout_Reader
Merge pull request #184 from tangziwen/v3

remove the float type "f" postfix in /simple_shadow.frag
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into Layout
[AUTO]: updating luabinding automatically
do not try to load empty texture
Merge branch 'v3' of https://github.com/super626/cocos2d-x into v3
performance improve
update for code format
remove unused code