Add metadata

Author: cephalin

README.md

@@ -1,7 +1,16 @@
+---
+topic: Node.js Hello World
+languages:
+  - javascript
+products:
+  - Azure App Service
+  - Azure Web Apps
+---
+
 # Node.js Hello World
 
 This sample demonstrates a tiny Hello World node.js app for [App Service Web App](https://docs.microsoft.com/azure/app-service-web).
 
 # Contributing
 
-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.
+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.