mv qiniu/api/seekable => qiniu/bytes/seekable
Update README.md
Update README.md
upgrade resumable up interface
modify docs
rm useless comment
rm useless comment
modify resumable/io unit testing
update
update
Merge pull request #97 from wangtuanjie/feature/new_mkfile_interface

Feature/new mkfile interface
Update CHANGELOG.md
Merge pull request #98 from qiniu/develop

Release 6.0.3