Update Module.php
Refactor of Beanstalkd
Handle exception in controller
Setup test folders
Remove service
tests
Add interfaces in Module
Fix Travis
Update requirements
Set default priority
Add tests
Move serialization logic ot concrete queues
Allow options for worker
Order
Remove unused parameters
Various fixes
Add doc
Merge pull request #3 from bakura10/add-beanstalkd

Add beanstalkd