Changed the default path listed in the comments of the Storage module. The default path now listed matches the default path from attachment.rd line 9

slight refactoring in geometry.rb to - only calculate transformation ratio if image needs to be cropped (Clemens Kofler)

Calling #valid? on the model corrctly runs validations on the attachment. Calling #valid? on the attachment correctly runs validations instead of reporting only on current status.

No tests yet since I had problems getting the suite to run :/

Added reprocess! method. The rake task will actually reprocess the data it has now instead of ignoring it.

has_attached_file respects :whiny_thumbnails. Added validates_attachment_thumbnails which does the same thing.

Changed keyword-collection mimetype matching to regexp matching.

Added tests to prove that the new validation is working.
Added the public directory to .gitignore
Changed the upfile content_type code to assign txt files to text/plain mime type

Put merged tests in the right place.

Changed S3 URL generation to a manual interpolation instead of RightAws's public_link method.