Added NOTICE.txt

Original commit: elastic/x-pack-elasticsearch@aad60b86a8

NOTICE.txt

@@ -0,0 +1,35 @@
+Elasticsearch Shield
+Copyright 2009-2015 Elasticsearch
+
+---
+This product includes software developed by The Apache Software
+Foundation (http://www.apache.org/).
+
+---
+This product contains software developed by Anders Moeller. The
+following is the copyright and notice text for this software:
+
+    Copyright (c) 2001-2011 Anders Moeller
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+    1. Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+    3. The name of the author may not be used to endorse or promote products
+       derived from this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+    OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+    IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+    NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+    THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

src/main/assemblies/plugin.xml

@@ -33,5 +33,9 @@
             <source>LICENSE.txt</source>
             <outputDirectory>/</outputDirectory>
         </file>
+        <file>
+            <source>NOTICE.txt</source>
+            <outputDirectory>/</outputDirectory>
+        </file>
     </files>
 </assembly>