jnicklas/carrierwave — pull request #610 by TheOddLinguist (2012-02-08 04:47:13+00:00)
Title: add gravity option to resize_to_fill

It looks like the gravity option for resize_to_fill was missing from the ClassMethods. For instance, setting up a version like this:

```ruby
version :large do
resize_to_fill(600, 600, 'North')
end
```

would result in a "wrong number of arguments" error. I couldn't find a set of tests which used the public ClassMethods, but all existing tests still passed after this addition. Let me know if there's anything I should change/try.