Fix some copyrights

example/grpc_c++/client.cpp

-// Copyright (c) 2018 Bilibili, Inc.
+// Copyright (c) 2018 brpc authors.
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

example/grpc_c++/server.cpp

-// Copyright (c) 2018 Bilibili, Inc.
+// Copyright (c) 2018 brpc authors.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -43,8 +43,6 @@ public:
             cntl->set_response_compress_type(brpc::COMPRESS_TYPE_GZIP);
         }
         res->set_message("Hello " + req->name());
-        // If an error happens, use controller::set_grpc_error_code to set errors
-        // e.g., cntl->set_grpc_error_code(brpc::GRPC_RESOURCEEXHAUSTED, "test grpc message");
     }
 };
 

src/brpc/grpc.cpp

-// Copyright (c) 2018 Bilibili, Inc.
+// Copyright (c) 2018 brpc authors.
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

src/brpc/grpc.h

-// Copyright (c) 2018 Bilibili, Inc.
+// Copyright (c) 2018 brpc authors.
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

src/butil/reader_writer.h

-// Copyright (c) 2018 Bilibili, Inc.
+// Copyright (c) 2018 brpc authors.
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// Author: Ge,Jun (gejun@bilibili.com)
+// Author: Ge,Jun (jge666@gmail.com)
 // Date: Wed Aug  8 05:51:33 PDT 2018
 
 #ifndef BUTIL_READER_WRITER_H

test/brpc_grpc_protocol_unittest.cpp

-// Copyright (c) 2018 Bilibili, Inc.
+// Copyright (c) 2018 brpc authors.
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.