Generate memes with Imgflip API

Ability to generate the top 20 most popular memes on Imgflip that lend themselves easily to text detection. Includes a couple that I didn't see in any other scripts, such as "X, X Everywhere" and "aaannnnnnd it's gone".
Do these really need to be loaded in the brain? It doesn't seem like you manipulate them at all, so there's not much value in hardcoding them.

If you do keep them, you'll want to put this inside a `robot.brain.on 'loaded', () ->` callback.