title: facebook-node-sdk for node.js scope parameter?
body: <p><a href="https://github.com/amachang/facebook-node-sdk" rel="nofollow">https://github.com/amachang/facebook-node-sdk</a>
  decided to use this module to build my facebook integrated login for node.js following the example with express:</p>
  
  <pre><code>var express = require('express');
  </code></pre>
  
  <p>var Facebook = require('facebook-node-sdk');</p>
  
  <pre><code>var app = express.createServer();
  app.configure(function () {
    app.use(express.bodyParser());
    app.use(express.cookieParser());
    app.use(express.session({ secret: 'foo bar' }));
    app.use(Facebook.middleware({ appId: 'YOUR_APP_ID', secret: 'YOUR_APP_SECRET' }));
  });
  
  app.get('/', Facebook.loginRequired(), function (req, res) {
    req.facebook.api('/me', function(err, user) {
      res.writeHead(200, {'Content-Type': 'text/plain'});
      res.end('Hello, ' + user.name + '!');
    });
  });
  </code></pre>
  
  <p>how to add additional permissions  like "email"?</p>