You can download it from github or rubygems, I attached readme, that should be sufficient enough to start hacking. As you may already know ID Software unfortunately didn’t provided official API, so if you want to get some data from them, your only option is to crawl their site. And that’s what this gem basically is - it’s a small crawler with parser, packed nicely into nice ready-to-use gem.

I currently use it in production on quake.net.pl, and so far it worked really nicely :-).