updated the README file

README.md

@@ -1,14 +1,17 @@
-spnavcfg 0.2.1
-------------
+spnavcfg
+========
 
-1. About
+About
+-----
 Spacenav daemon interactive configuration program.
 
-2. Installation
+Installation
+------------
 Requires GTK+ 2 and Xlib headers to be installed.
 ./configure, make, make install, as usual (make install part as root).
 
-3. Security
+Security
+--------
 The binary is installed setuid root in order to be able to modify /etc/spnavrc
 and send signals to the daemon. However, it was designed from start to be as
 secure as possible. spnavcfg launches two processes (see front.c and back.c).
@@ -17,5 +20,11 @@ while the backend that does all the gruntwork keeps effective uid root.
 As long as you don't run the program while logged in as root, it should be very
 secure.
 
-4. Contact
-For bug reports, feature requests, or whatever, contact: nuclear@member.fsf.org
+License
+-------
+Copyright (C) 2007-2018 John Tsiombikas <nuclear@member.fsf.org>
+
+This program is free software. Feel free to use, modify, and/or redistribute
+it under the terms of the GNU General Public License version 3, or (at your
+option) any later version published by the Free Software Foundation.
+See COPYING for details.