title: Express version output
body: <p>I upgraded <a href="http://expressjs.com/" rel="noreferrer">express.js</a> from 3.2.5 to 3.14.0, and used to output the version like this:</p>
  
  <pre><code>var express = require('express');
  console.log("**Express Version: ", express.version);
  </code></pre>
  
  <p>and would give me</p>
  
  <pre><code>**Express Version:  3.2.5
  </code></pre>
  
  <p>after I updated to 3.14.0, I get:</p>
  
  <pre><code>**Express Version:  undefined
  </code></pre>
  
  <p>any help? Thanks!</p>