Cleanup

After reading about the how router now in padrino-0.12 I browsed
through the code base and find places for cleaning up.

I couldn't fix the test because I could not find out what's going on
inside the get method and the params replacement. What about having
a remote pairing session to fix this problem? I would like to try it
out.

I checked in the `Gemfile.lock` because I read the following blog post
http://ryanbigg.com/2010/12/commit-it-or-else/ by @radar.

Best regards from Berlin

Matthias