GUACAMOLE-471: Update copyright year in NOTICE to 2018.
diff --git a/NOTICE b/NOTICE
index 47f2b4c..97e6130 100644
--- a/NOTICE
+++ b/NOTICE
@@ -1,5 +1,5 @@
 Apache Guacamole
-Copyright 2017 The Apache Software Foundation
+Copyright 2018 The Apache Software Foundation
 
 This product includes software developed at
 The Apache Software Foundation (http://www.apache.org/).