Adding a few regional units to KH

[QuintusSertorius]

I've got a similar, though simpler, question about modding recruitment. I'm playing with Epeiros-as-Pergamon again, and I'd like to be able to recruit Celto-Hellenic hoplites in Pergamon. It isn't currently a region where they are available, but they are a unit I can recruit, so I think it's a basic change to something.

EDIT: Never mind, I asked exactly the same question two years ago...