- update uhub.conf example after add !rules

- add example rules.txt
- fix compile warning in  src/util/timeout.c
- add example config file for rotate log file in RHEL\CentOS

doc/rules.txt

@@ -0,0 +1,5 @@
+1. rule #1
+2. rule #2
+3. rule #3
+......
+34. Rule #34

doc/uhub.conf

@@ -39,6 +39,11 @@ file_acl=/etc/uhub/users.conf
 # Normally this message is sent to clients when connecting.
 file_motd=/etc/uhub/motd.txt
 
+# This file can contain a rules of the hub.
+# Normally this message is sent to clients when write in chat !rules 
+file_rules=/etc/uhub/rules.txt
+
+
 # Slots\share\hubs limits
 limit_max_hubs_user = 0
 limit_max_hubs_reg = 0