Merge pull request #5 from racker/fix_ok_on_behalf_of

accept '!good nick' syntax
Merge pull request #6 from racker/fix_ok_on_behalf_of

added deploy_to_prod command
only users in teams can deploy to prod
only authed users can deploy
autodeploy when all is good
good on behalf of works even if the user is not on the channel
better help message