include an empty options hash to when cli cmd received no args
include an empty options hash to when cli cmd received no args

show usage instead of exception for `mojito build`, maybe others

yahoo/mojito,ooskapenaar/mojito,jeffblack360/mojito,jeffblack360/mojito,ooskapenaar/mojito,1950195/mojito,ooskapenaar/mojito,jeffblack360/mojito,jeffblack360/mojito,ooskapenaar/mojito,yahoo/mojito,yahoo/mojito,1950195/mojito,1950195/mojito