Turn on at sunrise, turn off at sunset

[danielmconrad]

1. Ask user for address or zipcode and store the lat/lng in config
   http://maps.googleapis.com/maps/api/geocode/json?address=60618
2. Ask user if monitor should be turned off at sunset or x hours after sunrise and store in config
3. Run script every 30 mins.
   a) If current time is within 30 mins of sunrise, turn on monitor.
   http://api.sunrise-sunset.org/json?lat=41.9464283&lng=-87.70740889999999&date=today
   b) If current time is within 30 mins of sunrise + x hours or sunset, turn off monitor.