Update README.md

Author: usa-m

README.md

@@ -30,4 +30,83 @@
  
 
 
+## Sample application
 
+Sample use of the library is done in following simple application:
+
+```cpp
+#include <iostream>
+#include <string>
+#include <exception>
+
+#include <stdio.h>
+
+#include "ddsconnector.h"
+
+using namespace std;
+using namespace dds::net::connector;
+
+
+void wait_for_exit_key();
+void my_double_consumer(std::string& variableName, double variableValue);
+
+
+int main()
+{
+  string appName = "DDS.Net C++ Connected App";
+  string serverIP = "127.0.0.1";
+  unsigned short serverPort = 44556;
+
+  cout << appName << endl;
+  cout << "-----" << endl;
+  cout << "Press Ctrl+C / input 'C' to exit." << endl << endl;
+
+  try
+  {
+    DdsConnector connector(
+        appName,
+        serverIP, serverPort,
+        new ConsoleLogger());
+
+    connector.registerDoubleConsumer("TESTX", my_double_consumer, ON_CHANGE);
+    connector.registerDoubleConsumer("TESTY", my_double_consumer, ON_CHANGE);
+
+    connector.start();
+
+    wait_for_exit_key();
+
+    connector.stop();
+  }
+  catch (exception& ex)
+  {
+    cout << "Error! " << ex.what() << endl;
+  }
+
+  cout << endl << endl << endl;
+}
+
+
+void wait_for_exit_key()
+{
+  char ch;
+  while ((ch = getc(stdin)) != 'C');
+}
+
+
+static double x, y;
+
+void my_double_consumer(std::string& variableName, double variableValue)
+{
+  if (variableName == "TESTX")
+  {
+    x = variableValue;
+  }
+  else if (variableName == "TESTY")
+  {
+    y = variableValue;
+
+    cout << x << ", " << y << endl;
+  }
+}
+
+```