initial support for rackspace cloud queues

initial support for rackspace cloud queues.

both input and output working,  no tests.

![vlcsnap-2014-03-02-18h57m21s54](https://f.cloud.github.com/assets/2488346/2305831/1a84bb54-a26f-11e3-9e83-9384443ede27.png)