Allow travis failures (temporarily) in ruby-head
Allow travis failures (temporarily) in ruby-head

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