AUTHORS: Add Vitalii Demianets

AUTHORS

@@ -63,6 +63,7 @@ Jean-Luc Cooke <jlcooke@certainkey.com>
 Andrew McDonald <andrew@mcdonald.org.uk>
 James Morris <jmorris@intercode.com.au>
 Jonathan Lynch <jonathan.lynch@intel.com>
+Vitalii Demianets <vitalii@orsoc.se>
 Daniel Mack <daniel@caiaq.de>
 capa66 <capa66@x204.com>
 Red_Wolf_2 <redwolf@wolfnexus.net>