[REQUEST for community contribution] Provide Celery/RabbitMQ example

[Grokzen]

There is a lot of people who said they want to use this client for a rabbitmq + celery solution with a clustered redis as backend.

What i am looking for is someone who could provide a example and some light documentation on how to use this lib with celery and a redis backend.

The contribution should add a minimal working example of code into the examples/celery/ folder with a small README.md file in the same folder describing how the solution works and how a user can use it and run it on their own. Possibly there should be a reference/link somewhere in the RTD docs referencing the example that it exists.