chengkiang

## remove-catalina-notification
Remove the macOS Catalina Update notification badge in Settings

defaults delete com.apple.preferences.softwareupdate LatestMajorOSSeenByUserBundleIdentifier && softwareupdate --list

Source: https://tinyapps.org/blog/202005070700_remove_catalina_notification_badge.html

## paynow.js
String.prototype.padLeft = function (n, str) {
  if (n < String(this).length) {
    return this.toString();
  }
  else {
    return Array(n - String(this).length + 1).join(str || '0') + this;
  }
}

function crc16(s) {
	String.prototype.padLeft = function (n, str) {
	if (n < String(this).length) {
	return this.toString();
	}
	else {
	return Array(n - String(this).length + 1).join(str \|\| '0') + this;
	}
	}

	function crc16(s) {