LiveNotifier is a mod that'll tell your subs on your subserver exactly when you go live on twitch or beam.
Curse: http://minecraft.curseforge.com/projects/livenotifier
Required mod: K4Lib
This mod is released under the MMPLv2
Yes, you can make pull requests for new variables, if implemented properly i'll merge them.
Please report bugs to the issues page. Put crashlogs in a pastebin or gist!