Update dep to express 4

Author: chenglou

package.json

@@ -4,7 +4,8 @@
   "description": "Code from the React tutorial.",
   "main": "server.js",
   "dependencies": {
-    "express": "3.12.1"
+    "body-parser": "^1.4.3",
+    "express": "^4.4.5"
   },
   "devDependencies": {},
   "scripts": {

server.js

@@ -1,10 +1,12 @@
 var express = require('express');
+var bodyParser = require('body-parser');
 var app = express();
 
 var comments = [{author: 'Pete Hunt', text: 'Hey there!'}];
 
 app.use('/', express.static(__dirname));
-app.use(express.bodyParser());
+app.use(bodyParser.json());
+app.use(bodyParser.urlencoded({extended: true}));
 
 app.get('/comments.json', function(req, res) {
   res.setHeader('Content-Type', 'application/json');
@@ -18,3 +20,5 @@ app.post('/comments.json', function(req, res) {
 });
 
 app.listen(3000);
+
+console.log('Server started: http://localhost:3000/');