soffes/imgix-rb — pull request #2 by meltingice (2013-07-31 16:19:10+00:00)
Title: Fix a bug due to imgix's bug

So this is pretty great... there's a bug with imgix where, if there are no params, an `&` is still required in front of the signature or else you will get Unauthorized. It doesn't even change the signature calculation, just the final URL.