Detect non-virtual received calls

[tpodolak]

Analyzers should be able to detect following wrong usages

namespace MyNamespace
{
    public class Foo
    {
        public int Bar()
        {
            return 2;
        }
    }

    public class FooTests
    {
        public void Test()
        {
            var substitute = NSubstitute.Substitute.For<Foo>();
            substitute.Received().Bar();
            substitute.ReceivedWithAnyArgs().Bar()
            substitute.DidNotReceive().Bar();
            substitute.DidNotReceiveWithAnyArgs().Bar();
        }
    }
}

and of course usages of beforementioned examples executed as ordinal method

[tpodolak]

Closed by #17