add OSS code of conduct link to Readme.md

Author: dipakboyed

README.md

@@ -147,3 +147,5 @@ Also, see the [short overview/tutorial](http://go.microsoft.com/fwlink/?LinkID=3
 * [API Reference](http://msdn.microsoft.com/en-us/library/office/dn575437.aspx) documentation
 * [Debugging / Troubleshooting](http://msdn.microsoft.com/EN-US/library/office/dn575430.aspx)
 * [Getting Started](http://go.microsoft.com/fwlink/?LinkID=331026) with the OneNote service API
+
+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.