[Functionality] Log app instance to the console

Added logging statement, so the user knows when the app is up and running.

app.js

@@ -75,6 +75,9 @@
     // Expose everything else as static files
     app.use(express['static'](options.directory));
 
-    // Finally, open the HTTP server
+    // Finally, open the HTTP server and log the instance to the console
-    app.listen(options.port);
+      app.listen(options.port, function() {
+      console.log('Open MCT application running at localhost:' + options.port)
+      });
+ 
     }());