completions/zsh: add 'pr-pull' options
completions/zsh: add 'pr-pull' options

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