heroku/omniauth-heroku — pull request #7 by wolframarnold (2013-10-18 19:21:08+00:00)
Title: Report uid and extra params

Expose additional params from OAuth handshake through omniauth.auth hash to client app, specifically
fill in uid (Heroku's user_id), token_type and report the params in 'extra' => 'raw_info'.