chore(license): update date ranges; standardise style (#349)

Author: Fdawgs

LICENSE

@@ -1,8 +1,10 @@
-Copyright (c) 2017 The Fastify Team
-Copyright (c) 2012-2017, Project contributors
 Copyright (c) 2012-2014, Walmart
+Copyright (c) 2012-2017, Project contributors
+Copyright (c) 2017-present The Fastify team
 All rights reserved.
 
+The Fastify team members are listed at https://github.com/fastify/fastify#team.
+
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:
     * Redistributions of source code must retain the above copyright