travis.yml: HOME Ruby path caching not needed.
travis.yml: HOME Ruby path caching not needed.

This ins stored in vendor/bundle now instead.

MikeMcQuaid/brew,reitermarkus/brew,JCount/brew,DomT4/brew,ilovezfs/brew,claui/brew,reelsense/brew,maxim-belkin/brew,sjackman/homebrew,Homebrew/brew,sjackman/homebrew,alyssais/brew,reitermarkus/brew,mahori/brew,sjackman/homebrew,maxim-belkin/brew,ilovezfs/brew,EricFromCanada/brew,Linuxbrew/brew,reitermarkus/brew,vitorgalvao/brew,Linuxbrew/brew,DomT4/brew,DomT4/brew,konqui/brew,mgrimes/brew,nandub/brew,alyssais/brew,claui/brew,EricFromCanada/brew,reelsense/brew,alyssais/brew,DomT4/brew,konqui/brew,JCount/brew,konqui/brew,MikeMcQuaid/brew,sjackman/homebrew,reitermarkus/brew,konqui/brew,MikeMcQuaid/brew,JCount/brew,nandub/brew,Linuxbrew/brew,claui/brew,nandub/brew,vitorgalvao/brew,Homebrew/brew,EricFromCanada/brew,nandub/brew,reelsense/brew,vitorgalvao/brew,EricFromCanada/brew,JCount/brew,Linuxbrew/brew,MikeMcQuaid/brew,maxim-belkin/brew,claui/brew,hanxue/linuxbrew,mgrimes/brew,mahori/brew,Homebrew/brew,vitorgalvao/brew,ilovezfs/brew,Homebrew/brew,hanxue/linuxbrew,mahori/brew,mahori/brew,mgrimes/brew,hanxue/linuxbrew