Wundergound Weather Integration

1. Get your Wunderground API key here
2. Go to your configuration page (the gear in the top-right of the web page) and expand the "Weather" section.
3. Enter your State and City.
4. Add the Wunderground API key to box labelled "API key for Wunderground"
5. Hit the checkmark in the upper left, and you should start getting outside temperature updates in a few minutes.