bump copyright year

SethTisue · SethTisue · commit 27f283aa9ab3 · 2018-02-15T19:36:58.000-08:00
diff --git a/LICENSE b/LICENSE
@@ -1,6 +1,6 @@
 This software is licensed under the Apache 2 license, quoted below.
 
-Copyright 2009-2017 Lightbend Inc. [http://www.lightbend.com]
+Copyright 2009-2018 Lightbend Inc. [http://www.lightbend.com]
 
 Licensed under the Apache License, Version 2.0 (the "License"); you may not
 use this file except in compliance with the License. You may obtain a copy of
