Installs Dwarf Fortress (http://www.bay12games.com/dwarves/) to your home directory and links the current version to dwarf_fortress/current for easy access.
The OS X version is self contained. The Linux version requires GTK+ 2+, SDL 1.2+, SDL_image, and some OpenGL implementation.
version: the version of Dwarf Fortress you're installing. source: optional attribute for a different source URL.
Once the coobook is run, just run "cd dwarf_fortress/current" and "./df", and you'll be up and running. !!FUN!! is up to you.
Flesh out Linux support, add Windows support.