And built on it from there. I also re-used some IRC documentation from Empathy and made sure to leave the author credits info in those pages.
Florian Müllne, the lead developer of Polari, has reviewed the docs and I updated them with his feedback as well.
If any of the Docs team has time for a review, I'd appreciate it. (Especially as I haven't written anything for a few years, so you won't hurt my feelings if I messed up!)
You can do a git checkout from Polari's GNOME git and they are in the docs branch.