Added license headers

NOTICE

@@ -0,0 +1,2 @@
+grpc_client - Support for GRPC in Erlang
+Copyright 2017 Bluehouse Technology Ltd.

src/grpc_client.erl

@@ -1,3 +1,22 @@
+%%%-------------------------------------------------------------------
+%%% 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.
+%%%
+
 %% @doc The interface for grpc_client.
 %%
 %% This module contains the functions use a gRPC service from Erlang.

src/grpc_client_app.erl

@@ -1,3 +1,22 @@
+%%%-------------------------------------------------------------------
+%%% 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.
+%%%
+
 -module(grpc_client_app).
 -behaviour(application).
 

src/grpc_client_chatterbox_adapter.erl

@@ -1,3 +1,22 @@
+%%%-------------------------------------------------------------------
+%%% 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.
+%%%
+
 %% @doc Adapter for Chatterbox, so that the Chatterbox HTTP/2 client can
 %% be used for the HTTP/2 client functionality required for gRPC.
 %%

src/grpc_client_connection.erl

@@ -1,3 +1,22 @@
+%%%-------------------------------------------------------------------
+%%% 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.
+%%%
+
 %% @private For each connection a process is started by the HTTP/2 client.
 %% For each new stream a 'client_stream' process is started
 %% (see grpc_client_stream.erl). The connection process sends messages to the 

src/grpc_client_stream.erl

@@ -1,3 +1,22 @@
+%%%-------------------------------------------------------------------
+%%% 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.
+%%%
+
 %% @private An a-synchronous client with a queue-like interface.
 %% A gen_server is started for each stream, this keeps track
 %% of the status of the http2 stream and it buffers responses in a queue.

src/grpc_client_sup.erl

@@ -1,3 +1,22 @@
+%%%-------------------------------------------------------------------
+%%% 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.
+%%%
+
 -module(grpc_client_sup).
 -behaviour(supervisor).