title: How to require GSAP in Node.js
body: <p>I try to include GSAP animation library in Node.js. For example I try to run GSAP with full features and  to do that I need to include first 'TweenMax.js' and then next 'TimelineMax.js'. In last version on GSAP I see that 'TweenMax.js' and 'TimelineMax.js' haves module.exports for Node.js in code implementation, but when I try to require them with Node.js - <code>require('./lib/gsap/TweenMax.js')</code>, Node.js returns me </p>
  
  <pre><code>'reference error: document is not defined'
  </code></pre>
  
  <p>in TweenMax.js and break all script.</p>
  
  <p>If any have idea how to fix that problem please help.
  Thanks.</p>