Allowing Orcid provider_name to be configurable
Using Devise::MultiAuth v0.0.2

I want to rely on it for looking up my OAuth2 client
Pointing to latest Devise::MultiAuth

The v0.0.2 did not allow me to pass options for the
`Devise::MultiAuth.oauth_client_for` call. This was necessary because
Orcid's sandbox API url (api.sandbox-1.orcid.org) has an invalid
certificate (i.e. *.orcid.org for the server)