add missing parameter to rsync

examples/example.rsync

@@ -54,6 +54,9 @@ days = 7
 # where the data to be backed up is (local or remote)
 #from = local
 
+# if remote source, specify the hostname or IP
+#host =
+
 # when "yes", test the connection for a remote source before backup
 #testconnect = no
 

handlers/rsync.in

@@ -25,6 +25,7 @@
 #
 #   [source]
 #   from = local or remote
+#   host = source hostname or ip, if remote backup
 #   testconnect = when "yes", test the connection for a remote source before backup
 #   include = include folder on backup
 #   exclude = exclude folder on backup