capability-token.2.x.js

var http = require('http'),
    express = require('express'),
    twilio = require('twilio');

var app = express();

app.get('/token', function(req, res) {
  // put your Twilio API credentials here
  var accountSid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
  var authToken = "your_auth_token";

  var capability = new twilio.Capability(accountSid, authToken);
  capability.allowClientIncoming("jenny");
  var token = capability.generate();

  res.set('Content-Type', 'application/jwt')
  res.send(token);
});

app.post('/voice', function (req, res) {
    // TODO: Create TwiML response
});

http.createServer(app).listen(1337, '127.0.0.1');
console.log('Twilio Client app server running at http://127.0.0.1:1337/');