Clean up on outstanding issues

- Always remove cache on aws queue delete
- add support for more iron mq config options
- remove bitdeli from readme
- publish and receive methods should support override configs
- adding tests for eventlisteners and di
- remove enforcing auth for providers, let their client handle it
`= array()` to support 5.3, if you dont care about 5.3, should go through and replace all `array`'s