add license header to Makefile (#108)
diff --git a/core/java8actionloop/Makefile b/core/java8actionloop/Makefile
index a118d99..5452469 100644
--- a/core/java8actionloop/Makefile
+++ b/core/java8actionloop/Makefile
@@ -1,3 +1,20 @@
+#
+# 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.
+#
+
IMG=actionloop-java-v8:nightly
PREFIX=docker.io/openwhisk
INVOKE=python ../../tools/invoke.py