Update README.md

Author: shchelok

README.md

@@ -57,6 +57,8 @@ zk-flock my_test_lock "bash /home/user/test.sh arg1 arg2 arg3"
 For attempting to lock lasted for a specific time, use the **-w** option (**--wait**) setting the time in seconds.
 Add key **-d** or **--daemonize** to starts this appliction as daemon.
 
+If need set minimum time in seconds for lock use the **-l** option (**--minlocktime**) - default 5 sec
+
 Use **-p** or **--pdeathsig** to specify a signal that will be sent if the master process died. By default the signal is **SIGTERM**.
 
 Non Linux usage warning