Add imgur provider

[kappa7194]

Hello, I've added a provider for imgur. The implementation is complete and it works.

I know I haven't (yet) added the XML documentation to the code, I've submitted this pull request to get feedbacks on the implementation.

P.s. How would you like me to handle the two errors marked by TODOs in ImgurAuthenticationHandler (communication failure and response deserialization failure)? Should I throw an exception?

[jerriep]

Thanks for contribution. I have scheduled to look at this on Friday

[kappa7194]

If you could let me know how I should handle any exception thrown by the HttpClient and/or failure codes returned when dealing with the remote endpoint (I couldn't see a common behaviour in the existing providers) I'll have everything ready and shiny by Friday.

[jerriep]

Yeah if there is no common implementation, then I would say to just go ahead and implement it as you feel comfortable with.

[kappa7194]

I've committed some refactoring and the XML documentation.

Let me know if you find any issue.

[jerriep]

👍

[jerriep]

Thanks again @kappa7194

I am waiting for feedback on another PR before I do a new release

[jerriep]

@kappa7194 We are looking for help moving to ASP.NET 5. Please read http://www.jerriepelser.com/blog/calling-contributors-for-oauth-providers