Merge pull request #21 from ventayol/master

Added scale mode to not resize the image
NSURLSession completionHandler is not guaranteed to be called on the main queue. Fixes #22.
Clarify custom formats usage. Fixes #20.
Document HNKScaleModeNone. Related to #21.
Increase timeout
removeAllImages. Closes #15.
clearFormatNamed: > removeImagesOfFormatNamed:

For consistency.
Use Podfile for HanekeTests dependencies

Instead of static libraries
Download unit tests with OHHTTPStubs
Update cocoa pods
Change decompression method
Increase version
Merge branch 'development'
Installation
Twitter link
Increase max delay