Add amqp_recv and amqp_send commands.

Squashed commit of the following:

commit 68608e84224971dd0231bd273f44773a47708803
Author: Andrew Thomson <andrewguy9@Andrews-MacBook-Pro.local>
Date:   Tue Aug 21 16:42:39 2012 -0700

    amqp_recv uses argparse to select server and queue.

commit 91c49fb7970c3bbd15d31661e546d109a32198e6
Author: Andrew Thomson <andrewguy9@Andrews-MacBook-Pro.local>
Date:   Tue Aug 21 16:42:08 2012 -0700

    Strip the newline off of lines we submit.

commit 4920ae0adfa6fafc167e647e382dcb17795d488d
Author: Andrew Thomson <andrewguy9@Andrews-MacBook-Pro.local>
Date:   Tue Aug 21 16:25:12 2012 -0700

    amqp_send now uses argparse to get parameters.

    Sends conents of files or stdin.

commit 26f8b31791828163b3977820dfa8e6b1433325dd
Author: Andrew Thomson <andrewguy9@Andrews-MacBook-Pro.local>
Date:   Tue Aug 21 15:12:32 2012 -0700

    amqp_send sends lines from stdin.

commit 7d883900aa875437e3a6c9571065555b998eac02
Author: Andrew Thomson <andrewguy9@Andrews-MacBook-Pro.local>
Date:   Tue Aug 21 14:48:21 2012 -0700

    Initial implmentation of amqp_recv and amqp_send.

    Taken from example code at
    http://www.rabbitmq.com/tutorials/tutorial-one-python.html
add --frequncy argument to repeat