Update travis key
Update travis key

agideon/heroku-buildpack-scala,phdezann/heroku-buildpack-scala,KimStebel/heroku-buildpack-scala,yannickdeturck/heroku-buildpack-scala,Scalingo/scala-buildpack,heroku/heroku-buildpack-scala,KimStebel/heroku-buildpack-scala,Scalingo/scala-buildpack,phdezann/heroku-buildpack-scala,heroku/heroku-buildpack-scala,agideon/heroku-buildpack-scala,yannickdeturck/heroku-buildpack-scala