Update AUTHORS

Add @misantronic to the authors list

Author: kulshekhar

AUTHORS

@@ -13,6 +13,7 @@ Chris Sauve <chrismsauve@gmail.com>
 Christian Linne <ShadowVampire@web.de>
 Christian Rackerseder <git@echooff.de>
 Daniel Perez Alvarez <unindented@gmail.com>
+David Schkalee <david.schkalee@magicline.de>
 David Sheldrick <djsheldrick@gmail.com>
 Emil Persson <emil.n.persson@gmail.com>
 Eric Anderson <e@ericlanderson.com>