private static void Main(string[] args)
{
Trace.Listeners.Add(new TextWriterTraceListener(Console.Out));
ROS.Init(args, "Listener");
var spinner = new AsyncSpinner();
spinner.Start();
NodeHandle node = new NodeHandle();
Subscriber Subscriber = node.Subscribe <std_msgs.String>("/chatter", 1, chatterCallback);
ROS.WaitForShutdown();
}