Add some very simple irc notification to Travis.

This works by running a super simple irc "client" that provides unix filesystem pipes to interact with the server. It's pretty silly, but it makes it easy to interact with irc from the bash scripts Travis runs.

This is because TravisCI currently cannot send notifications to irc.mozilla.org. See https://github.com/travis-ci/travis-ci/issues/436

If this works, this pull request should trigger irc notifications.