pfop
test&doc
persistentOps
isQiniuCallbacl
flag s
querystring
var name
Merge pull request #99 from lintianzhi/feature/is_qiniu_callback

isQiniuCallback
remove useless comma in index.js
Merge pull request #101 from qiniu/remove-useless-comma

remove useless comma in index.js
Merge pull request #98 from lintianzhi/feature/pfop

Feature/pfop
update change log
Merge branch 'develop' of github.com:qiniu/nodejs-sdk into develop
Merge pull request #102 from qiniu/develop

Release 6.1.3