Update copyright info

tangrufus · tangrufus · commit c2ced18c8d76 · 2018-02-06T10:18:26.000+08:00
diff --git a/LICENSE b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2017 Tang Rufus https://www.typist.tech/
+Copyright (c) 2017-2018 The contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
