update end year in notice (#336)

diff --git a/NOTICE.txt b/NOTICE.txt
index cfb4778..a463188 100644
--- a/NOTICE.txt
+++ b/NOTICE.txt
@@ -1,5 +1,5 @@
 Apache OpenWhisk API Gateway
-Copyright 2016-2018 The Apache Software Foundation
+Copyright 2016-2019 The Apache Software Foundation
 
 This product includes software developed at
 The Apache Software Foundation (http://www.apache.org/).
@@ -11,4 +11,4 @@
 The following components are provided under the MIT License. See project link for details.
 
      (MIT License) fakengx (bsm/fakengx - https://github.com/bsm/fakengx)
-     (MIT License) fakeredis (catwell/fakeredis - https://github.com/catwell/fakeredis)
\ No newline at end of file
+     (MIT License) fakeredis (catwell/fakeredis - https://github.com/catwell/fakeredis)