Adds pubSub to Broker, cleans up legacy code
Allows for errors in transport-redis.createConnection
Adds basic dispatch functions
Changes pubSub language to "sub" (publish clients are separate)
Added master/slave example
Added publish to transport-redis
Moves worker "complete" and "failure" to single "finished" event
Adds task on/broadcast functionality
Bug fixes in dispatcher
Fixes problem where expiration didn't work across processes
Renamed complete event to success
Bumps version number
Merge pull request #2 from brandoncarl/feature/pubsub

Adds basic pubsub capabilities (to receive events on other processes)