LICENSE.md: Update copyright year

daurnimator · daurnimator · commit 3af50550cd9b · 2018-02-04T22:00:49.000-08:00
diff --git a/LICENSE.md b/LICENSE.md
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015-2017 Daurnimator
+Copyright (c) 2015-2018 Daurnimator
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
