Inspect the bulb, not the name of the bulb

Inspecting b.name always just gave me "undefined". It seems better to
inspect the whole bulb to get its complete status.
Add status request function

Gateway has the findBulbs method to send a status request to all the
bulbs on the gateway. I think it would be useful to be able to send
status requests to bulb objects as well.
Merge pull request #10 from SSteve/master

Inspect the bulb, not the name of the bulb. Add status request method to bulb class.