Implemented integer slot scope, updated docs and added a for imageable scope which the repository can now use.
Update readme.md

Just some more doc updates.
Update Image.php

Clean up indentation.
Update Image.php

Clean up more indentation.
Update composer.json

Indentation fixes.
Update readme.md

Grammar.
Adding an interesting cropping library.  Includes an entropy crop.

See more here:
http://codegeekz.com/cropping-images-entrop/
Added Storage Driver for Amazon S3