mention #python-effects
very minor docstring thing
fix name of IRC channel
set up travis IRC notifications.
skip joining and use notices for travis IRC notifications.
hax up twisted.py, changing the perform() signature and adding deferred_performer and make_twisted_dispatcher

I can't finish fixing the tests until I migrate over base_dispatcher and whatnot from the old branch.
Merge remote-tracking branch 'remotes/tomprince/better-intent-dispatching-2' into better-intent-dispatching-2
Merge remote-tracking branch 'remotes/tomprince/better-intent-dispatching-2' into better-intent-dispatching-2