Add rubinius to the travis matrix
Add rubinius to the travis matrix

mwpastore/sinatra,mwpastore/sinatra,JonMidhir/sinatra,burningTyger/sinatra,jkowens/sinatra,jkowens/sinatra,ryanshaw/sinatra,mwpastore/sinatra,burningTyger/sinatra,ryanshaw/sinatra,burningTyger/sinatra,sinatra/sinatra,JonMidhir/sinatra,JonMidhir/sinatra,jkowens/sinatra,sinatra/sinatra