def add(severity, message = nil, progname = nil, &block)
      @loggers.each do |logger|
        logger.add(severity, message, progname, &block)
      end
    end
def add(severity, message = nil, progname = nil, &block)
      @loggers.each do |logger|
        logger.add(severity, message, progname, &block)
      end
    end
=== Synopsis

   MultiLogger.new([logger1, logger2])

 === Args

 +loggers+::
   An array of loggers. Each one gets every message that is sent to the MultiLogger instance

 === Description

 Create an instance.

 Methods that write to logs just write to each contained logger in turn