Merge pull request #1 from hughlv/master

Added resumable put.
Merge pull request #2 from hughlv/master

Remove redundant files.
added docs
Merge pull request #3 from why404/master

added source doc
Merge pull request #6 from hughlv/master

the new objc-sdk
Merge pull request #7 from hughlv/master

Fixed memory leak problem.
Supported CRC32.
Replaced appendFormat with appendString for performance concern.
Merge pull request #8 from hughlv/feature/crc32

Supported CRC32.
Merge pull request #9 from qiniu/master

Supported CRC32
Update README.md
Merge pull request #12 from qiniu/develop

rename to ios-sdk
Resumable uploader.
Updated document.
Update bucket name in shown message
Merge pull request #1 from ikbear/feature/resumableupload

Update bucket name in shown message
iprint modification