style(License): update copyright year (#986)

edwinychu · mhevery · commit 42b9edb69165 · 2018-02-08T09:37:16.000-08:00
diff --git a/LICENSE b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright (c) 2016 Google, Inc.
+Copyright (c) 2016-2018 Google, Inc.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
