Added documentation

mysql.cf

@@ -131,6 +131,13 @@ vars:
 
 }
 
+#
+# Create cronjob
+# @param cfg definition for database, db_user, db_host, db_pass, db_name
+# @param file file to dump database into
+# @table_name a table in the database which has to exist, if not no dump will be done
+# @run "true" or "false", means create cron job or not
+#
 bundle agent create_mysql_backup_cron_job(cfg,file,table_name,run)
 {
 classes: