message: Update index.html
  getInputDevices is depricated.
  Replaced with listVideoInputDevices
diff: let selectedDeviceId;
  const codeReader = new ZXing.BrowserMultiFormatReader()
  console.log('ZXing code reader initialized')
  - codeReader.getVideoInputDevices()
  + codeReader.listVideoInputDevices()
  .then((videoInputDevices) => {
  const sourceSelect = document.getElementById('sourceSelect')
  selectedDeviceId = videoInputDevices[0].deviceId
  