Fix :cask_url and allow :appcast
Fix :cask_url and allow :appcast

Homebrew/brew,Homebrew/brew,JCount/brew,MikeMcQuaid/brew,claui/brew,MikeMcQuaid/brew,konqui/brew,vitorgalvao/brew,nandub/brew,MikeMcQuaid/brew,JCount/brew,konqui/brew,vitorgalvao/brew,claui/brew,EricFromCanada/brew,EricFromCanada/brew,Homebrew/brew,vitorgalvao/brew,sjackman/homebrew,sjackman/homebrew,EricFromCanada/brew,JCount/brew,claui/brew,sjackman/homebrew,vitorgalvao/brew,claui/brew,Homebrew/brew,konqui/brew,nandub/brew,EricFromCanada/brew,MikeMcQuaid/brew,nandub/brew,nandub/brew,konqui/brew,sjackman/homebrew,JCount/brew