message: Update AUTHORS
  Add to the authors list
diff: @@ -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>
  