brew: fix formula in multiple taps issue
brew: fix formula in multiple taps issue

> brew install vobcopy
Error: Formulae found in multiple taps:
 * homebrew/boneyard/vobcopy
 * zmwangx/tap/vobcopy

zmwangx/dotfiles,zmwangx/dotfiles,zmwangx/dotfiles,zmwangx/dotfiles,zmwangx/dotfiles