OAuth sample

[baronfel]

I've seen this a few times, but people ask about a sample to show oauth configuration. We should make one that illustrates the different configurations (naturally with secret placeholders and such).

[rmunn]

The answer I left on this Stack Overflow question could be a decent start towards a sample.

[sashang]

I asked the original question on SO and tried the solution and it works. Thanks. I began putting together a toy example of how to use this authentication from Saturn, but I have a problem with CORS blocking the request and I'm not sure how to configure Saturn to so that it isn't blocked. See here: https://stackoverflow.com/questions/52295216/enabling-cors-using-f-and-asp-net