This is necessary so Gemnesium will be green.

Standardize strip with resy of application.  Without to_s, causes errors like "undefined method `strip' for image/bmp:MIME::Type".

In some case, we seriously don't want to prepend the timestamp with & if there wasn't a query string there. If the original URL doesn't have any query string, we should add the ?.

There was some problem with command line parsing with a special character.

The original commit came from @amazonwebservices and @trevorrowe in #579.
I had to revise the commit and make sure all the test cases are passing.
All credits still goes to those guys, thanks a lot!

    This can be used in migrations, i.e.

      create_table :users do |t|
        t.has_attached_file :avatar
      end

(three commits squashed into one by Alexey Mahotkin <squadette@gmail.com>)

Remove the Options class, replacing it with a hash.

This will fix the problem on the CI server, where some time the change occurred by "write_file" will not trigger Rubinius to generate a compiled .rbc file.

This also removes Pry.

Separate the UrlGenerator out from the Attachment. Some example plugins that could be written include generating thumbnails on the fly for different thumbnail sizes, or delaying the thumbnail generation until it is first called.