Merge pull request #1 from dcollied2l/master

Initial release of restsharp valence authentication class
Merge pull request #2 from dcollied2l/master

Update to use latest SDK
Fix for ArgumentOutOfRangeException when using both UrlSegment and Query parameters.
Merge pull request #4 from jparker-d2l/master

Fix for ArgumentOutOfRangeException when using both UrlSegment and Query parameters