Add release command to Makefile

.gitignore

@@ -13,3 +13,5 @@ www/dist/
 www/.DS_Store
 www/node_modules
 npm-debug.log
+builds/
+releases/

Makefile

@@ -21,6 +21,21 @@ package: build
 package_linux: override os=linux
 package_linux: package
 
+release: ## Upload release to GitHub releases.
+	mkdir -p builds/darwin-${TAG}
+	GOOS=darwin GOARCH=$(arch) go build -ldflags "-X github.com/netlify/gocommerce/cmd.Version=`git rev-parse HEAD`" -o builds/darwin-${TAG}/gocommerce
+	mkdir -p builds/linux-${TAG}
+	GOOS=linux GOARCH=$(arch) go build -ldflags "-X github.com/netlify/gocommerce/cmd.Version=`git rev-parse HEAD`" -o builds/linux-${TAG}/gocommerce
+	mkdir -p builds/windows-${TAG}
+	GOOS=windows GOARCH=$(arch) go build -ldflags "-X github.com/netlify/gocommerce/cmd.Version=`git rev-parse HEAD`" -o builds/windows-${TAG}/gocommerce.exe
+	@rm -rf releases/${TAG}
+	mkdir -p releases/${TAG}
+	tar -czf releases/${TAG}/gocommerce-darwin-$(arch)-${TAG}.tar.gz -C builds/darwin-${TAG} gocommerce
+	tar -czf releases/${TAG}/gocommerce-linux-$(arch)-${TAG}.tar.gz -C builds/linux-${TAG} gocommerce
+	zip -j releases/${TAG}/gocommerce-windows-$(arch)-${TAG}.zip builds/windows-${TAG}/gocommerce.exe
+	@hub release create -a releases/${TAG}/gocommerce-darwin-$(arch)-${TAG}.tar.gz -a releases/${TAG}/gocommerce-linux-$(arch)-${TAG}.tar.gz -a releases/${TAG}/gocommerce-windows-$(arch)-${TAG}.zip v${TAG}
+
+
 deps: ## Install dependencies.
 	@go get -u github.com/golang/lint/golint
 	@go get -u github.com/Masterminds/glide && glide install