Update travis config.
Update travis config.

jaywink/cartridge-reservable,Parisson/cartridge,traxxas/cartridge,stephenmcd/cartridge,wbtuomela/cartridge,jaywink/cartridge-reservable,wyzex/cartridge,dsanders11/cartridge,stephenmcd/cartridge,dsanders11/cartridge,ryneeverett/cartridge,Kniyl/cartridge,traxxas/cartridge,ryneeverett/cartridge,traxxas/cartridge,syaiful6/cartridge,Parisson/cartridge,wbtuomela/cartridge,jaywink/cartridge-reservable,wyzex/cartridge,wbtuomela/cartridge,syaiful6/cartridge,syaiful6/cartridge,Kniyl/cartridge,dsanders11/cartridge,Kniyl/cartridge,Parisson/cartridge,stephenmcd/cartridge,ryneeverett/cartridge,wyzex/cartridge