Add new log levels to the sample ANSIColorLogFormatter in the Readme

Author: DaveWoodCom

README.md

@@ -410,9 +410,12 @@ if let fileDestination: FileDestination = log.destination(withIdentifier: XCGLog
     ansiColorLogFormatter.colorize(level: .verbose, with: .colorIndex(number: 244), options: [.faint])
     ansiColorLogFormatter.colorize(level: .debug, with: .black)
     ansiColorLogFormatter.colorize(level: .info, with: .blue, options: [.underline])
+    ansiColorLogFormatter.colorize(level: .notice, with: .green, options: [.italic])
     ansiColorLogFormatter.colorize(level: .warning, with: .red, options: [.faint])
     ansiColorLogFormatter.colorize(level: .error, with: .red, options: [.bold])
     ansiColorLogFormatter.colorize(level: .severe, with: .white, on: .red)
+    ansiColorLogFormatter.colorize(level: .alert, with: .white, on: .red, options: [.bold])
+    ansiColorLogFormatter.colorize(level: .emergency, with: .white, on: .red, options: [.bold, .blink])
     fileDestination.formatters = [ansiColorLogFormatter]
 }
 ```