Merge pull request #7594 from lukasaldersley/patch-1

Update year in LICENSE.txt

LICENSE.txt

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2009-2018 Robby Russell and contributors
+Copyright (c) 2009-2019 Robby Russell and contributors
 See the full list at https://github.com/robbyrussell/oh-my-zsh/contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy