fix rsf
list prefix
changelog
Merge pull request #77 from icattlecoder/feature/list_prefix_repr

Feature/list prefix repr
add endUser to json string
change log
Merge pull request #78 from icattlecoder/hotfix/add_enduser

Hotfix/add enduser
fix doc
fix private bucket fileop bug
fix bug
fix bug
Fix a invalid url
Merge pull request #80 from icattlecoder/bugfix/imageInfo

fix private bucket fileop bug
Merge pull request #79 from icattlecoder/bug_fix/updoc

fix doc
add warning of utf8 keys
Merge pull request #81 from longshanksmo/develop

add warning of utf8 keys
Merge remote-tracking branch 'qiniu/develop' into develop
adjust download domain
Merge pull request #83 from longshanksmo/develop

adjust download domain
Update README.md