You can find it in the "playground", under the Output section.
It's a very easy to use and cute library. It does cause a few conflicts here and there, especially other libraries that want to have d8-d10 to themselves- but most things work great. I'd recommend this mainly for AT328 if you are gong to have extensive code.. it does eat a bit of memory.
I'm currently working the interface for a camera controller using this, and switching back and forth between the arduino video and video the camera outputs (previews, etc) and piping that to the screen.
this is such a simple build that you can do it for a gag.. have fun!
By the way, this should also work for PAL, simply change it in code.. if the library supports it, which I think the current version does.