Update license.

Michiel Verkoijen · Michiel Verkoijen · commit 373a46651521 · 2018-01-04T12:00:22.000+01:00
diff --git a/LICENSE b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright (c) 2013-2016 Voormedia
+Copyright (c) 2013-2018 Tinify
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
