add pty-gpib-emulator from github

pty-gpib-emulator/middle-man/simple.cpp

@@ -0,0 +1,15 @@
+#include "MiddleMan.h"
+#include <iostream>
+
+int main(int argc, char **argv) {
+  if (argc < 2) {
+    std::cout << "Usage: " << argv[0] << " <tty device>" << std::endl;
+  }
+    
+
+  MiddleMan m(argv[1]);
+  std::cout << m.getPTY() << std::endl;
+  m.run();
+  
+  return 0;
+}