README: write a list of major contributors to the project

Thank you all, and thanks very much to those who contributed only once
and are omitted from the documentation.

README

@@ -568,9 +568,7 @@ Wicked written by:
 Vicious written by:
   - Adrian C. (anrxc)        <anrxc sysphere.org>
 
-Vicious contributors:
-  - Michael Unterkalmsteiner <miciu gmx.de>
-  - Martin Striz             <striz raynet.cz>
+Vicious major contributors:
   - Benedikt Sauer           <filmor gmail.com>
   - Greg D.                  <jabbas jabbas.pl>
   - Henning Glawe            <glaweh debian.org>
@@ -579,3 +577,6 @@ Vicious contributors:
   - Hagen Schink             <troja84 googlemail.com>
   - Jörg Thalheim            <jthalheim gmail.com>
   - Arvydas Sidorenko        <asido4 gmail.com>
+  - Dodo The Last            <dodo.the.last gmail.com>
+  - ...
+  - Consult git log for a complete list of contributors