AUTHORS: Add contributor Josh Lehan

AUTHORS

@@ -28,6 +28,7 @@ Glenn Francis Murray <glenn@gfm.cc>
 fleger <florian6.leger@laposte.net>
 pooler <pooler@litecoinpool.org>
 Abracadabra <hocuscapocus@gmail.com>
+Josh Lehan <krellan@krellan.net>
 Tydus <Tydus@Tydus.org>
 Raulo <p987341@gmail.com>
 Thorsten Gilling <tgilling@web.de>