Merge branch 'master' of https://github.com/jasli2/evolution
add  follow/unfollow course
Merge branch 'master' of https://github.com/jasli2/evolution
add feed_item for class course
Merge pull request #62 from hutuxiansheng/master

user follow and unfollow course
Merge pull request #61 from cocosvsn/master

change loadSWF modal play