Restoring engine parameter until article update

Author: msangapu-msft

package.json

@@ -5,6 +5,9 @@
     "private": true,
     "license": "MIT",
     "author": "Microsoft",
+    "engines": {	
+        "node": ">=6.9.1"	
+    },
     "scripts": {
         "start": "node index.js"
     }