message: removing duplicate import
diff: <script src="https://unpkg.com/@webcomponents/webcomponentsjs@^2/webcomponents-bundle.js"></script>
  <script src="../build/Tone.js"></script>
  <script src="./js/tonejs-ui.js"></script>
  - <script src="./js/tonejs-ui.js"></script>
  <style type="text/css">
  tone-transport {
  margin-bottom: 10px;
  