Add myself to AUTHORS as required by the PR help text.

MartinAltmayer · MartinAltmayer · commit cc39f41c535e · 2017-07-15T13:54:18.000+02:00
diff --git a/AUTHORS b/AUTHORS
@@ -104,6 +104,7 @@ Marcin Bachry
 Mark Abramowitz
 Markus Unterwaditzer
 Martijn Faassen
+Martin Altmayer
 Martin K. Scherer
 Martin Prusse
 Mathieu Clabaut
