Update express dev dependency to version 4

package.json

@@ -13,13 +13,15 @@
   },
   "devDependencies": {
     "request": "~2.30.0",
-    "express": "~3.4.7",
+    "express": "~4.10.1",
     "mocha": "~1.15.1",
     "chai": "~1.8.1",
     "sinon": "~1.7.3",
     "sinon-chai": "~2.4.0",
     "mocha-jshint": "~0.0.7",
-    "once": "~1.3.0"
+    "once": "~1.3.0",
+    "method-override": "~2.3.0",
+    "body-parser": "~1.9.2"
   },
   "license": "MIT",
   "keywords": [

test/integration/multifetch.spec.js

@@ -52,7 +52,8 @@ describe('multifetch', function() {
 			chai.expect(body)
 				.to.have.property('user')
 				.to.have.property('headers')
-				.to.have.property('content-type', 'application/json');
+				.to.have.property('content-type')
+				.to.match(/^application\/json/);
 		});
 
 		it('should contain user_1', function() {

test/server.js

@@ -2,6 +2,9 @@ var fs = require('fs');
 var path = require('path');
 
 var express = require('express');
+var methodOverride = require('method-override');
+var bodyParser = require('body-parser');
+
 var users = require('./fixtures/users');
 var albums = require('./fixtures/albums');
 
@@ -56,8 +59,8 @@ var album = function(request, response, next) {
 var create = function() {
 	var app = express();
 
-	app.use(express.json());
-	app.use(express.methodOverride());
+	app.use(bodyParser.json());
+	app.use(methodOverride());
 
 	app.use(function(request, response, next) {
 		response.notFound = function() {