How to use omniauth from SPA

I've been at this for days now and am unable to figure out how to get omniauth working with Ember Simple Auth. I also tried J Toker, but it seems that is no longer supported.

Can I just get an explanation in pure HTTP requests/responses for the process of using omniauth (specifically Facebook)? If I just understood what this gem was expecting to receive at each endpoint, what it sends back, and in what order, I'd be very happy to help on J-Toker or create an Ember addon. Thanks!

No file or test is named. Start by tracing the pure HTTP requests and responses for OmniAuth with Facebook, including what each endpoint receives and returns and the order of the flow; done means providing an explanation that helps Ember Simple Auth users understand the integration.

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