新增go modules支持，自行管理第三方包依赖，方便开发者使用

third/github.com/Shopify/sarama/Makefile

@@ -0,0 +1,30 @@
+default: fmt vet errcheck test
+
+# Taken from https://github.com/codecov/example-go#caveat-multiple-files
+test:
+	echo "" > coverage.txt
+	for d in `go list ./... | grep -v vendor`; do \
+		go test -p 1 -v -timeout 90s -race -coverprofile=profile.out -covermode=atomic $$d || exit 1; \
+		if [ -f profile.out ]; then \
+			cat profile.out >> coverage.txt; \
+			rm profile.out; \
+		fi \
+	done
+
+vet:
+	go vet ./...
+
+# See https://github.com/kisielk/errcheck/pull/141 for details on ignorepkg
+errcheck:
+	errcheck -ignorepkg fmt github.com/Shopify/sarama/...
+
+fmt:
+	@if [ -n "$$(go fmt ./...)" ]; then echo 'Please run go fmt on your code.' && exit 1; fi
+
+install_dependencies: install_errcheck get
+
+install_errcheck:
+	go get github.com/kisielk/errcheck
+
+get:
+	go get -t