zquestz/omniauth-google-oauth2 — pull request #86 by asaaki (2014-01-25 22:32:51+00:00)
Title: Change prompt to approval_prompt

According to the docs at [1] there is no `prompt` parameter anymore, but
another one named `approval_prompt` which can be used forcing a consent.

[1] https://developers.google.com/accounts/docs/OAuth2WebServer