title: Moment.js: "TypeError: momentRange.range" when using with moment-range
body: <p>I have problem using all 3 of the packages together. I define them like this:</p>
  
  <pre><code>var moment = require('moment-timezone');
  var momentRange = require('moment-range');
  </code></pre>
  
  <p>And when I want to use the moment-range functions, I'm trying to call it like this:</p>
  
  <pre><code>var range1 = momentRange.range(moment("string1"), moment("string2"));
  </code></pre>
  
  <p>And I'm getting error: <code>TypeError: momentRange.range is not a function</code></p>
  
  <p>What am I doing wrong?</p>