omniauth-auth0 gem support
What does this MR do?
This MR adds the omniauth-auth0 gem (and in turn, Auth0 Support as an Auth Provider).
Are there points in the code the reviewer needs to double check?
Nothing comes to mind. The changes are very minimal.
Why was this MR needed?
I'm using the Omnibus package which has no custom Gem support, and a project came up which required Auth0 support. This MR allows me to continue using the Omnibus package and still complete this project.
What are the relevant issue numbers?
Additional Notes:
I've included Documentation in line with the other Auth providers (e.g. Facebook/Google). Hopefully this is sufficient.
If there's any questions/issues, don't hesitate to let me know.
Thanks!