Merge pull request #1 from yang-g/c++api

C++api

include/grpc++/stream.h

@@ -85,7 +85,7 @@ class ClientReader final : public ClientStreamingInterface,
                            public ReaderInterface<R> {
  public:
   // Blocking create a stream and write the first request out.
-  explicit ClientReader(ChannelInterface *channel, const RpcMethod &method,
+  ClientReader(ChannelInterface *channel, const RpcMethod &method,
                ClientContext *context,
                const google::protobuf::Message &request)
       : call_(channel->CreateCall(method, context, &cq_)) {