fauxmo does not handle GetBinaryState

[stefanis]

Recently Alexa started sending GetBinaryState soap actions both before and after SetBinaryState actions to confirm the result of SetBinaryState. Without it she claims the target is not responding.
Adding the code to handle the request is really easy. I have already done it, but I don't have permission to push changes to this repo (and honestly I don't know how to do it properly. I use SVN for my projects) I'm attaching the new fauxmo.py.

fauxmo.zip