Display and quit if no command is specified.
Display and quit if no command is specified.

This avoids creating a mess all over your working directory when called
with omv is called with no args.

gpjonesii/oh-my-vagrant,goern/oh-my-vagrant,LalatenduMohanty/oh-my-vagrant,mairin/oh-my-vagrant,purpleidea/oh-my-vagrant,br0ziliy/oh-my-vagrant,gpjonesii/oh-my-vagrant,geekcheng/oh-my-vagrant,goern/oh-my-vagrant,mairin/oh-my-vagrant,br0ziliy/oh-my-vagrant,mairin/oh-my-vagrant,geekcheng/oh-my-vagrant,bhalothia/oh-my-vagrant,LalatenduMohanty/oh-my-vagrant,bhalothia/oh-my-vagrant,purpleidea/oh-my-vagrant,purpleidea/oh-my-vagrant,br0ziliy/oh-my-vagrant,goern/oh-my-vagrant,geekcheng/oh-my-vagrant,bhalothia/oh-my-vagrant,gpjonesii/oh-my-vagrant,LalatenduMohanty/oh-my-vagrant