Update Makefile

Makefile

@@ -4,6 +4,8 @@ PACKAGES=$(shell go list ./...)
 
 KOALA=$(BIN_DIR)/$(BIN)
 GOMETALINTER=$(BIN_DIR)/gometalinter
+GORELEASER=$(BIN_DIR)/goreleaser
+DEP=$(BIN_DIR)/dep
 
 .PHONY: all test lint cover clean
 
@@ -12,24 +14,36 @@ all: clean test install
 install: $(KOALA)
 
 $(KOALA):
-	@go build -v -o $(KOALA) ./cmd/$(BIN)
+	go build -v -o $(KOALA) ./cmd/$(BIN)
 
 test: lint
 	$(shell echo "mode: count" > coverage-all.out)
-	@for pkg in $(PACKAGES); do \
+	for pkg in $(PACKAGES); do \
 		go test -cover -coverprofile=coverage.out -covermode=count $$pkg; \
 		tail -n +2 coverage.out >> ./coverage-all.out; \
 	done
 
 lint: $(GOMETALINTER)
-	@gometalinter ./...
+	gometalinter ./...
 
 $(GOMETALINTER):
-	@go get -v -u github.com/alecthomas/gometalinter
+	go get -v -u github.com/alecthomas/gometalinter
+
+$(GORELEASER): $(DEP)
+	go get -d github.com/goreleaser/goreleaser
+	cd $(GOPATH)/src/github.com/goreleaser/goreleaser \
+		&& dep ensure -vendor-only \
+		&& go install
+
+$(DEP):
+	go get -v -u github.com/golang/dep/cmd/dep
+
+release: $(GORELEASER)
+	goreleaser
 
 cover: test
-	@go tool cover -html=coverage-all.out
-	@rm -rf coverage-all.out coverage.out
+	go tool cover -html=coverage-all.out
+	rm -rf coverage-all.out coverage.out
 
 clean:
-	@rm -rf $(KOALA)
+	rm -rf $(KOALA)