title: node twitter npm package
body: <p>I've installed node-twitter via npm and have created an index.js file with the code below.  When I run node index.js in the console I'm not getting any response.  I've included my own keys and secrets so that doesn't appear to be the issue.  </p>
  
  <pre><code>var Twitter = require('twitter');
  
  var client = new Twitter({
    consumer_key: process.env.TWITTER_CONSUMER_KEY,
    consumer_secret: process.env.TWITTER_CONSUMER_SECRET,
    access_token_key: process.env.TWITTER_ACCESS_TOKEN_KEY,
    access_token_secret: process.env.TWITTER_ACCESS_TOKEN_SECRET,
  });
  
  client.stream('statuses/filter', {track: 'nyc'},  function(stream){
    stream.on('data', function(tweet) {
      console.log(tweet.text);
    });
  
    stream.on('error', function(error) {
      console.log(error);
    });
  });
  </code></pre>