nutNotifyShutdown use fct and update readme

nutShutdown.sh

@@ -2,23 +2,15 @@
 # Auteur : Belgotux
 # Site : www.monlinux.net
 # Licence : GPLV3 
-# Version : 1.0
+# Version : 1.1
 # Date : 08/04/2012
+# Update : 04/01/2023
 
-# Variables
-logfile=/var/log/nutNotify/nutNotify.log  #logfile for nutNotify
-flagfile=/var/log/nutNotify/nutShutdown.flag
+# variables
+configFile=/usr/local/etc/nutNotify.conf
 
-#add to log
-function addLog {
-	if [ "$logfile" == "" ] ; then
-		echo "Can't write to log !" 1>&2
-		return 1
-	else
-		echo "$(date +'%a %d %H:%M:%S') $1" >> $logfile
-		return $?
-	fi
-}
+source "$configFile"
+source "$(dirname $0)/nutNotifyFct.sh"
 
 
 addLog "poweroff $HOSTNAME"