Update README.markdown

Show the ability to intercept with additional interfaces

Author: scott-xu

README.markdown

@@ -12,5 +12,5 @@ ChannelProxies can be intercepted now:
 
     kernel.Bind<IFooService>()
         .ToMethod(context => ChannelFactory<IFooService>.CreateChannel(new NetTcpBinding(), new EndpointAddress("net.tcp://localhost/FooService")))
-	    .Intercept()
+	    .Intercept(typeof(ICommunicationObject))
 	    .With(interceptor);