Adding FIGlet support.

I've implemented support for FIGlet based on [this idea](https://duck.co/ideas/idea/922/create-big-text).

Using the perl module [Text::FIGlet](http://search.cpan.org/~jpierce/Text-FIGlet-2.19.3/lib/Text/FIGlet.pm) and FIGlet fonts files.

Triggers on stardend figlet. For example:
figlet text (figlet DuckDuckGo)
figlet font text (figlet graceful DuckDuckGo)

At the moment I've just added my whole font directory. Let me know if that is way to many.

Tested on Ubuntu with Firefox, Chromium and Opera. Also Android with Firefox, Chrome and the native browser.

![figletddg](https://f.cloud.github.com/assets/851595/2369244/17327998-a7d6-11e3-9467-9019f30f36c4.png)