message: revert svg text
diff: </head>
  <body>
  - <div id="svgText"></div>
  -
  <script>
  var constructor = module.exports;
  var parameters = makerjs.kit.getParameterValues(constructor);
  var model = makerjs.kit.construct(constructor, parameters);
  - var svg = makerjs.exporter.toSVG(model, { closingTags: true});
  + var svg = makerjs.exporter.toSVG(model);
  document.write(svg);
  - document.getElementById('svgText').innerText = svg;
  </script>
  </body>
  