title: MEF2 and .NET Core
body: <p>I've been reading around that MEF is alive and well and etc...<br>
  I also been reading that I only need to replace the <code>void ConfigureServices(IServiceCollection services)</code> for <code>IServiceCollection ConfigureServices(IServiceCollection services)</code> supplying my own container (in my case the MEF container)...</p>
  
  <p>My problem is that i can't manage to find the correct <code>return</code>. You see, <code>CompositionHost</code> does not implement <code>IServiceCollection</code>...</p>
  
  <p>Can anyone teach me how to use MEF2 as my container on a .NET Core webapi?</p>