fixed #2082 add two tests to ParticleTest, corrected some mistakes of ClippingNodeTest
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js-tests into Iss2082_FixSomeBugs
Merge pull request #153 from dingpinglv/Iss2082_FixSomeBugs

fixed #2082 add two tests to ParticleTest, corrected some mistakes of ClippingNodeTest