Allow for 'rake console', launching IRB with the gem pre-included
Add Device#subscribe_to_upnp_events for listening to player state change
Oh dear god, Savon, just shut up with those log messages
Add a UPNP unsubscribe method + timeouts
Correctly unsubscribe from upnp events
Correctly respond when discover is called on a network with no sonos devices
Fleshed out UPNP subscription / unsubscription process
Merged master
Merge pull request #17 from soffes/upnp

Implemented UPNP subscription/unsubscription endpoints