How to access user_info?

Hello,

We have opted for a `SETUP_PROC` when handling multi-tenancy for Okta. This means, however, we need to access the user info BEFORE we get to the omniauth callbacks controller.

Since the gem can actually access the user info, is there a more low level way of retrieving the user information from the returned `state` and `code` that's in the callback URL?
