sck-v/google_timezone — pull request #3 by bdmac (2014-03-05 00:23:34+00:00)
Title: Add key as allowed param

Google's timezone API documentation indicates that all apps should use
an API key for requests.
https://developers.google.com/maps/documentation/timezone/#api_key

The "key" parameter was not in the list of allowed_params and would be
rejected. This change simply adds :key to the list of allowed_params.