add pty-gpib-emulator from github

pty-gpib-emulator/c++/Device.cpp

@@ -0,0 +1,13 @@
+
+#include "Device.h"
+#include <string>
+#include <iostream>
+
+
+string Device::handleCMD(Interface *fpl,
+			 string cmd,
+			 vector<string> *args) {
+  std::cout << "$$ Device: " << cmd << std::endl;
+  
+  return "";
+}