add base64Decode and fix PutPolicy Expire
fix
fix
Merge pull request #84 from icattlecoder/feature/base64decode

add base64Decode and fix PutPolicy Expire
add saveKey,insertOnly,fsizeLimit,detectMime, persistent to put Policy
add Putpolicy marshal unit test
fix
fix
Merge pull request #85 from icattlecoder/feature/add-putPolicy-feild

add saveKey,insertOnly,fsizeLimit,detectMime, persistent to put Policy
changelog
changelog
Add Title for docs/README.md.
Merge pull request #89 from BluntBlade/develop

Add Title for docs/README.md.
Merge pull request #86 from icattlecoder/feature/add-putPolicy-feild

changelog
添加mimeType支持.设置extra的mimeType时使用次值,不设置按以前方式处理
当不设置key时,使用etag为其key值
key 可以为空字符串
Merge pull request #95 from simon-liubin/feature/mimiType

添加mimeType支持.设置extra的mimeType时使用次值,不设置按以前方式处理
Update CHANGELOG.md
Merge pull request #93 from qiniu/develop

merge develop to master