Angular.js with Jade and Express - data binding not working

Angular.js with Jade and Express - data binding not working

I'm learning AngularJS with Dan Wahlin's tutorial
(http://youtu.be/i9MHigUZKEM?t=13m35s). I have the following code in my
views/index.jade:
!!! 5
html(data-ng-app='')
head
title Angular Tutorial
body
| Name:
br
input(type='text', data-ng-model='name') | {{name}}
script(src='https://ajax.googleapis.com/ajax/libs/angularjs/1.0.8/angular.min.js',
type='text/javascript')
But when I run the app, and type anything in the Name box, it does not
display the text like it does in the tutorial. What am I doing wrong?