In Visual Studio 2015 Preview (Pre Release), how can I add a service reference for a WCF service?
Another potential way of doing this that has worked for me is to simply add a dll project to the solution and add the service ref here as you normally would - include the dll in the MVC project and ref for the services.
You just need to copy the contents of app.config to the mvc projects own app.config - yes, app.config, not web.config.
Done