update NOTICE file to 2019
diff --git a/NOTICE b/NOTICE
index feb18f0..7cbfa51 100644
--- a/NOTICE
+++ b/NOTICE
@@ -1,5 +1,5 @@
 Apache MADlib
-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/).