Merge pull request #103 from qiniu/develop

update to 6.3.3.1

Merge pull request #102 from qiniu/develop

Release 6.3.3

Merge pull request #98 from qiniu/develop

Release 6.3.2

Merge pull request #96 from lintianzhi/fix/uint32_crcValue

crc32

Merge pull request #90 from qiniu/develop

Release 6.3.1

Merge pull request #83 from lintianzhi/featuer/asi/progress

useragent

Merge pull request #80 from qiniu/develop

Release 6.3.0

Merge pull request #76 from qiniu/develop

Release 6.2.8

Merge pull request #72 from williambao/patch-1

Update QiniuUtils.m

Merge pull request #62 from qiniu/develop

Release 6.2.5