sheerun/s3_file_field — pull request #10 by apauly (2014-01-10 18:15:52+00:00)
Title: respect region option

This allows the user to configure the region like this:
```ruby
S3FileField.config do |c|
# region prefix of your bucket url (optional), eg. "s3-eu-west-1"
# defaults to 's3'
c.region = "s3-eu-west-1"
end
```