message: rename dist to js
diff: <script>
  var makerjs = require('makerjs');
  </script>
  - <script src="dist/pointer.js"></script>
  - <script src="dist/playground.js"></script>
  + <script src="js/pointer.js"></script>
  + <script src="js/playground.js"></script>
  <script>
  //config
  MakerJsPlayground.relativePath = '../examples/';
  