add KeyFrameSample
add samples
Merge pull request #8 from Narsiss/addKeyFrameSample

add KeyFrameSample
Merge pull request #9 from Narsiss/addSamples

Add samples
添加ui samples及工程文件
Merge pull request #10 from Narsiss/editor_projects

添加ui samples及工程文件
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Merge pull request #13 from chengstory/#4893

#4893
update samples for cocos2d-x-master
Merge pull request #14 from Narsiss/#4556

issue #4556 : adapt CocostudioSamples for cocos2d-x-master