Add 3.11

part3/phonebook/index.js

@@ -1,10 +1,12 @@
 const express = require("express");
 const app = express();
-app.use(express.json());
 const cors = require("cors");
-app.use(cors());
 const morgan = require("morgan");
 
+app.use(express.json());
+app.use(cors());
+app.use(express.static('build'))
+
 morgan.token("body", function (req, res) {
   return req.method === "POST" ? JSON.stringify(req.body) : "";
 });