<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>Title</title>
  </head>
  <body>
    <div>
      <button id="initialize">Initialize</button>
    </div>

    <script src="js/index.js"></script>
    <script>

    </script>
  </body>
</html>

Add demo html for easier development
:sparkles: Add demo html for easier development
