commit - 7e04fdcea465610a0c024edfd0305f3a7292bb1a
commit + 355ad914158c9e719ce27a9d2cce0f13d58d4db3
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--- README.md
+++ README.md
@@ -13,4 +13,21 @@ To compile it just run
 The only dependency is libevent.  It expects ssh to be `/usr/bin/ssh`,
 compile with `-DSSH_PATH=...` to alter the path eventually.
 
-Check out the manpage for the usage.
+
+### Usage
+
+```
+usage: lstun [-dv] -B sshaddr -b addr [-t timeout] destination
+```
+
+Check out the manpage for further the usage.
+
+
+### Motivation
+
+It was written to forward lazily all the traffic on the local port
+2525 to a remote port 25, thus using ssh as some sort of
+authentication.
+
+The need for the "lazy" opening and closing of the tunnel is to avoid
+wasting resources when not needed.