Tavis.Problem

This library provides .Net support for the media type application/problem+json defined in RFC 7807

	var problem = new ProblemDocument
        {
            ProblemType = new Uri("http://example.org"),
            Title = "Houston we have a problem",
            StatusCode = HttpStatusCode.BadGateway,
            ProblemInstance = new Uri("http://foo")
        };

        problem.Extensions.Add("bar", new JValue("100"));

    var response = new HttpResponseMessage(HttpStatusCode.BadGateway)
        {
            Content = new ProblemContent(problem)
        };