Update copyright years

mbryzek · mbryzek · commit 530464dd983b · 2018-09-25T11:27:51.000-04:00
diff --git a/LICENSE b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2016 Flow Commerce
+Copyright (c) 2016-2018 Flow Commerce
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
