Added the Imagine image library
Merge pull request #1 from davidyell/features/resize

Added the Imagine image library
Allowed different thumbnail sizes
Resolves #2. Added an override for existing folders. Removed forced folder creation
Fixed the generation of thumbnails
Updated readme
Resolves #7. Refactored the generation of the thumbnails out into an event listener
Started working on the validation rules
Created some basic validation rules
Relates to #5. Got the validation working
Resolves #6. Put in a check to makeThumbs to ensure that the file is an image
Relates to #6. Refactored the check out of the function to save processing
Relates to #7. Refactored out the transformations into the listener
Updated readme with new features
Fixed my links
Fixed a few minor issues
Added phpunit for testing
Resolves #10. Added phpunit support and created some basic automated tests
Merge branch 'master' of git://github.com/davidyell/CakePHP3-Proffer
Relates to #11. Maybe Travis will work?