Merge pull request #1 from LCrongxuan/master

update code and doc
Modified README
modified readme
modify readme
modify readme
modify readme
Merge pull request #2 from xiusiyan/master

modify readme
modify readme
modify readme
modify readme
modify readme
Merge pull request #3 from xiusiyan/master

modify  readme
modify readme
Merge pull request #4 from xiusiyan/master

modify  readme
Merge pull request #1 from alibaba/master

合并更新