Merge pull request #28 from xushiwei/feature/resumable-put

resumable io
resumable put test
fix
Merge pull request #30 from pipul/feature/b_fd_rput_test

resumable put test
remove admin api for bucket op
remove admin api for bucket op
Merge pull request #31 from pipul/feature/b_fd_remove_bucket_api

Feature/b fd remove bucket api
remove bucket test
Merge pull request #32 from pipul/feature/b_fd_remove_bucket_api

remove bucket test
Update conf.go
Update README.md
changelog
fix
Merge pull request #34 from pipul/feature/b_fd_changelog_130409

Feature/b fd changelog 130409
Update CHANGELOG.md
1. PutPolicy add ReturnUrl etc; 2. GetPolicy.MakeRequest