Just a bit more fun..

rake automaton:command

> bounce 'http://i2.wp.com/phindie.com/wp-content/uploads/2013/04/Grumpy-Cat.png'
> bounce 'https://cdn1.iconfinder.com/data/icons/hallowen_linux/256/Black_Cat.png'
> bounce 'http://bringinthecats.com/img/cat3.png'