Add client as well

Fix a buffer overflow, remove strcpy() calls

Squashed commit of the following:

commit 9011b50
Author: Frederic Cambus <[email protected]>
Date:   Sat Jan 23 15:39:12 2016 +0100

    Fix a buffer overflow by getting rid of all strcpy() calls

Update README.md

v1.5.1

1.5.0

bump version 1.4.4

let's call that 1.4.3

Fix telnet size negotiation