Adding Microsoft open source code of conduct

ReadMe.md

@@ -116,4 +116,6 @@ void EnableTracking();
 /// Renews the session.
 /// </summary>
 void RenewSession();
-```
+```
+
+This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.