Added Ghais to authors file

AUTHORS

@@ -6,4 +6,5 @@ Thorsten von Eicken <tve@rightscale.com>
 Matt Robenolt <mattr@disqus.com>
 Phillip Couto <phillip.couto@stemstudios.com>
 Niklas Korz <korz.niklask@gmail.com>
-Nimi Wariboko Jr <nimi@channelmeter.com>
+Nimi Wariboko Jr <nimi@channelmeter.com>
+Ghais Issa <ghais.issa@gmail.com>