Add license for OpenMessaging

distribution/LICENSE-BIN

@@ -314,4 +314,21 @@ The source code of guava can be found at https://github.com/google/guava.
  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.
+------
+This product has a bundle OpenMessaging, which is available under the ASL2 License.
+The source code of OpenMessaging can be found at https://github.com/openmessaging/openmessaging.
+
+ Copyright (C) 2017 The OpenMessaging authors.
+
+ 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.