Add support for Docco to the maven build system

![Screenshot from 2013-03-25 21:57:48](https://f.cloud.github.com/assets/180404/301049/5fae587e-95ba-11e2-94a2-b99af2a93404.png)

Docco is a quick-and-dirty documentation generator. It takes specially formatted comments and produces html documentation for them.

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Personally, I'm unsure if this a good idea or a bad idea. I will let the pull-request gods decide.