code: function link(key, options) {
    if (options.google && options.name) {
      return 'https://chart.googleapis.com/chart?chs=166x166&chld=L|0&cht=qr&chl=' + otpauth(key, options.name);
    } else {
      return 'https://chart.googleapis.com/chart?chs=166x166&chld=L|0&cht=qr&chl=' + encodeURIComponent(key);
    }
  }
docs: Create a Google charts link to a QR Code with the key embeded in it
  
  @param     {String}    key
  @param     {Object}    options
  @return    {String}