learn gRPC with Go

Define the protocol. Look at the gRPC documentation on how to protobuf. Definition must be precise as we already have a message waiting to be parsed.
Generate the Go file, by running docker run --rm -v $(pwd):$(pwd) -w $(pwd) znly/protoc --go_out=plugins=grpc:. -I. ./salute/salute.proto

Implement Send

Implement Serve

go test ./...

When all tests have passed

Either run detached or in 2 different terminals:

go run server/server.go
go run web/web.go

Now open localhost:8080