Updating API_ENDPOINT to darksky.net
Updating API_ENDPOINT to darksky.net

With the announcement of darksky.net, requests to forecast.io will be redirected until the end of the year. Updating the class to the new API endpoint.

Signed-off-by: Ryan Bridge <88499f6133b911e7544782c2fa3cfeba44f1ea5c@gmail.com>

jaimz22/Overcast