AlephDaemon now reads AMQP settings from settings.py.
Module docstring updated.
AMQPMessage structure was removed - it is not necessary anymore.
routing_key removed from PikaDaemon - it has no real meaning.

Routing keys are important only when sending messages, not receiving,
recognition of keys is done at rabbitmq's level.
Updated constants names in settings.py, to better reflect naming convention
Script for testing communication updated.
Lincence tag in setup.py updated.
Updated documentation as reaction to removed routing_key.