Authentication
++++++++++++++

Authentication for this service is done via an `API Key`_. To obtain an API
Key:

1. Open the `Cloud Platform Console`_
2. Make sure that billing is enabled for your project.
3. From the **Credentials** page, create a new **API Key** or use an existing
   one for your project.

.. _API Key:
    https://developers.google.com/api-client-library/python/guide/aaa_apikeys
.. _Cloud Console: https://console.cloud.google.com/project?_
