When you first connect your app to a hue hub, the hub issues you an app username. It's a long string of text
that you'll use for subsequent requests.
To create a new user on a hub, you need to give the hue a devicetype. If you don't know what to put, use your
own name, as it's easier to keep track that way.
enter devicetype:
press the button on the hub
then within 30 seconds, press this button:
If you succeed, the results will appear below, and also in the username field.
The following functions require the hub IP address and a valid app username.
To get the whole system status as a long JSON object: