Customize progressive download callback queue
Merge commit 'e11524c4045a1b40bb657fdabd9a767855c20ce5'

Conflicts:
	AFDownloadRequestOperation.m
Merge pull request #30 from chebur/master

Progressive download callback queue customization
Don't write to output stream if any error occurs.
Merge pull request #34 from hankbao/master

Make sure we don't write to output stream if any error occurs.
code style
Bump podspec to 1.0.0
Add gitignore
Fixes an issue with "resuming" already complete downloads that failed for other reasons (e.g. file moving). Fixes #15.
Fixes a warning in Xcode5
Prevent pulling in 2.0 dependency.
Merge pull request #39 from adamyanalunas/prevent_2.0_jump

Prevent pulling in AFNetworking 2.0
Create cacheFolder if it does not exist
Safer threading with file manager
Merge pull request #43 from davidquon/cacheFolder_check

Create cacheFolder if it does not exist
Update with Upstream