aprilFools.js - dynamically load aprilFools.css on or after April 1, 2013

Now you can do your dirty work any time between now and April 1st and the shenanigans will automatically happen at the right time!

Requires [dotjs](https://github.com/defunkt/dotjs) - I couldn't think of an easy way around this. Is there a `Custom.css` analog for javascript?