golang Makefile

```
.PHONY: build clean lint help

all: build deploy

build:
	GOOS=linux GOARCH=amd64 go build -v -o ./bin/phonebook-backend-d  .
	upx ./bin/phonebook-backend-d

deploy:
	git commit -am "release"
	git push

lint:
	golint ./...

clean:
	rm -rf ./bin/phonebook-backend-d
	go clean -i .

help:
	@echo "make: 编译程序"
	@echo "make lint: 检查代码风格"
	@echo "make clean: 清空二进制文件及缓存文件"
```