types should be nested in HTTPClient

[weissi]

HTTPClientConfiguration should be HTTPClient.Configuration
HTTPClientErrors should be HTTPClient.Errors

[tanner0101]

@weissi I was going to put up a PR for this one, but I think it would cause conflicts with #1. I'm willing to put one up after #1 is decided on though.

[artemredkin]

Should we close it? It was fixed by #10

[weissi]

Yes thanks all