The package version v2016.3.830.1 is the UI for Xamarin version that includes UWP support. This is what you can see in my previous screenshot.
If you don't see this version, it may be because you are currently referencing an older version. To update, open the version selector dropdown (to the right in the Nuget Package manager) and you'll be able to select "Latest Stable"
Note that is the beta version, the official version is being released this week. Please let me know if you have any further questions or have trouble adding the reference.
Lance | Tech Support Engineer, Sr.
Telerik by Progress
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