Add missing ASL header on xsl file

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@811004 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/bundleplugin/src/main/resources/org/apache/felix/bnd/blueprint.xsl b/bundleplugin/src/main/resources/org/apache/felix/bnd/blueprint.xsl
index 3b1968b..eb44e25 100644
--- a/bundleplugin/src/main/resources/org/apache/felix/bnd/blueprint.xsl
+++ b/bundleplugin/src/main/resources/org/apache/felix/bnd/blueprint.xsl
@@ -1,5 +1,22 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!--
 
+    Licensed to the Apache Software Foundation (ASF) under one or more
+    contributor license agreements.  See the NOTICE file distributed with
+    this work for additional information regarding copyright ownership.
+    The ASF licenses this file to You 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.
+
+-->
 <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:bp="http://www.osgi.org/xmlns/blueprint/v1.0.0">
 	<xsl:output method="text" />