Added NuGet pack batch file. Updated build target (include Xamarin.iOS and Xamarin.Android). Updated copyright information.
Updated Client methods to async.
Updated NuGet pack workflow.
Added NetworkClient. Minor cleanup to getter and setter XML comments.
Minor cleanup to comments. Updated coding styles for consistency.
Added sample JSON response in comments to track API changes. Updated to version 0.2 for release to public NuGet repo.
Updated documentation and NuGet manifest.