Showing Silverlight unit tests in VS2013 Test Explorer

I have a Silverlight client project Project.Client employing strong use of MVVM with Caliburn Micro, however there's lots of calculations in the ViewModels that I see fit to unit test.

I would like to create a Project.Client.Test unit test project which references Project.Client and have its test results appear in Test Explorer (and not test results showing in a web page).

I installed NUnit 3 with the runners and adapters however I cannot see unit tests in Visual Studio 2013's Test Explorer. Is there a way to do that?