knox was not handling alternative regions properly.
removed commented out line.
Merge pull request #28 from bcoe/region-fix

Downloading from S3 using knox did not handle alternative regions
Added strict stratergy. This will destroy the aspect ratio but will make sure
that the image is resized to the specified dimensions. Just like fill but
doesn't zoom in
Merge pull request #32 from bcoe/strict

Merge of siddhant3s's strict resize option.
added new resize strategy.