add license header to sources

1 files changed, 16 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index 4a6e55d5..e09e5be4 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,19 @@
+#
+# Copyright 2016 WebAssembly Community Group participants
+#
+# 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.
+#
+
 .SUFFIXES:
 
 ALL = sexpr-wasm