Doc and Test updates

• Integrate with Gitter #81
• test updates:
  • remove event emitter limits in test
  • do not disconnect fake redis

Add the ability to retrieve a list of queued jobs

#79

Ensure redis connections get released

#78

workerCleanup errback

#76

Problem deleting queue. Queue isn't removed from list of queues

#75

queue.cleanOldWorkers

#70

failed queue managment

#74