TeksuraThis is a great tutorial for how to connect to twitch chat via an IRC client, but it stops short of explaining how to make your bot do anything beyond sending simple message to the channel. that's not very useful for a moderation bot which needs to send commands to ban or timeout people. Such commands simply don't work as directed in the mIRC help files. The twitch server refuses to recognize them.
This might be useful for you if you're up to programming one yourself. https://github.com/cinchrb/cinch