Update license statement in source files.
diff --git a/enc/command.h b/enc/command.h
index e097ab5..5e0f0c5 100644
--- a/enc/command.h
+++ b/enc/command.h
@@ -1,17 +1,10 @@
-// Copyright 2013 Google Inc. 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.
-//
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+ Distributed under MIT license, or public domain if desired and
+ recognized in your jurisdiction.
+ See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
// This class models a sequence of literals and a backward reference copy.
#ifndef BROTLI_ENC_COMMAND_H_