Added unit test for treating offline devices as powered=false
Added unit test for treating offline devices as powered=false

balloob/python-wink,w1ll1am23/python-wink,bradsk88/python-wink,balloob/python-wink,python-wink/python-wink,python-wink/python-wink,w1ll1am23/python-wink,bradsk88/python-wink