Missing ConfigureAwait(false) DeserializeResponseBody

[thinkingserious]

#453 (comment)

sendgrid-csharp/src/SendGrid/Response.cs

Line 103 in f16c303

var dsContent = JsonConvert.DeserializeObject<Dictionary<string, dynamic>>(content.ReadAsStringAsync().Result);

[Gimly]

For now the DeserializeResponseBody method is not asynchronous, which is why ReadAsStringAsync is called synchronously (with the Result call). I propose to make DeserializeResponseBody asynchronous, and adding the ConfigureAwait(false).

To be coherent with the rest of the API, I would also propose to change the name to DeserializeResponseBodyAsync. Obviously both changes will make a breaking change. Will that be OK?