updating single page web app tutorial

Author: aahill

Tutorials/Bing-Image-Search/single-page-webapp/app.js

@@ -0,0 +1,10 @@
+const http = require('http');
+const express = require("express");
+const app = express();
+var port = 8000;
+
+app.use(express.static("public"));
+
+app.listen(port, function () {
+    console.log('Starting the Node.js server for this sample. Navigate to http://localhost:'+port+'/ to view the webpage.');
+});