The type or namespace name ServiceHost does not exist in the namespace System ServiceModel

Question

So, I'm attempting to add this wcf service in an app for Windows IoT(Raspberry Pi) using Visual Studio 2015.

Now, I can't add a reference 'on the usual way' .So, I tried adding a nuget reference to System.ServiceModel.

        using (var host = new System.ServiceModel.ServiceHost (typeof(HelloWorldService), _baseAddress))
        {

        }

How can I reach the ServiceHost? Resharper doesn't help either!