Add files via upload

Add license text

Author: bjeffrie

sqldeveloper/extension/xml/individual/NestedDisplaysExample.xml

@@ -1,5 +1,17 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <displays>
+<!--  
+Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 
+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 the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License. 
+-->
     <!--
         The basic idea for master-detail or independent displays is:
         1) display entities can be nested to create parent-child or top-bottom multiple display