Merge pull request #72 from sharpstone/montes/upgrade-dependencies

Updates gem dependencies

Merge pull request #71 from sharpstone/katya-montes/upgrade-sinatra

Upgrade Sinatra, Ruby, and dependencies

0.9.0

0.8.0

0.7.1

0.7.0

0.6.0

0.5.2

0.6.0.pre

0.5.1