Merge pull request #980 from thvdveld/update-license

Update license copyright holder

LICENSE-0BSD.txt

@@ -1,4 +1,4 @@
-Copyright (C) 2016 [email protected]
+Copyright (C) smoltcp contributors
 
 Permission to use, copy, modify, and/or distribute this software for
 any purpose with or without fee is hereby granted.