Update omniauth-google-oauth2
The version of the Ruby Gem(omniauth-google-oauth2) that is currently in use (0.2.1) is using the soon to be deprecated auth scopes:
https://www.googleapis.com/auth/userinfo.profile
https://www.googleapis.com/auth/userinfo.email
Doc Here:
https://developers.google.com/+/api/oauth#deprecated-scopes
The latest version of the Gem (0.2.5) has moved over to the new auth values: https://github.com/zquestz/omniauth-google-oauth2/commit/8d42bff78a060640019d39915d4f9d85bf56a1e1