Refactor 404 middleware

app.js

@@ -65,8 +65,7 @@ app.use(less({ src: __dirname + '/public', compress: true }));
 app.use(app.router);
 app.use(express.static( path.join(__dirname, 'public'), { maxAge: 864000000 } ));
 app.use(function(req, res) {
-  res.status(404);
-  res.render('404');
+  res.render('404', { status: 404 });
 });
 app.use(express.errorHandler());