added missing gem 'rack-contrib' to Gemfile
added missing gem 'rack-contrib' to Gemfile

marrero984/showoff,marrero984/showoff,binford2k/showoff,binford2k/showoff,binford2k/showoff,marrero984/showoff,puppetlabs/showoff,puppetlabs/showoff,puppetlabs/showoff,binford2k/showoff,puppetlabs/showoff,marrero984/showoff