Add install/usage instructions for non yaml mode users.

Add install/usage instructions for non yaml mode users.

I know this would seem obvious to someone already using a thermostat, but for someone who is starting with this card to set up their first thermostat, it would be nice to suggest setting up the generic_thermostat in configuration.yaml.

Cheers, Richard

Is your feature request related to a problem? Please describe.

To have the ability to split devices based on owner and/or type, it would be nice to be able to use a divider to split the entities.

Describe the solution you'd like