updated the makefile to support creating releases

Makefile

@@ -1,7 +1,11 @@
 BIN := databank-dbloader
 MAIN := cmd/databank-dbloader/main.go
+RCDB := baseball_databank_2017_a663145.sqlite3
+TAG := 0.4.0
+LINUX_TGZ := baseball-stats-db-$(TAG)-linux-amd64.tgz
+MACOS_TGZ := baseball-stats-db-$(TAG)-macos-amd64.tgz
 
-all: lint vet test build
+all: lint vet test build linux
 
 build: $(MAIN) 
 	go build -o bin/$(BIN) $(MAIN)
@@ -13,4 +17,17 @@ test:
 	go test ./...
 
 lint:
-	golint ./internal/... ./cmd/databank-dbloader/...
+	golint ./internal/... ./cmd/databank-dbloader/...
+
+pkg-release-linux:
+	tar -zcvf $(LINUX_TGZ) $(RCDB) ./bin
+	sha256sum $(LINUX_TGZ) >./$(LINUX_TGZ).checksum
+
+pkg-release-macos:
+	tar -zcvf $(MACOS_TGZ) $(RCDB) ./bin
+	shasum -a 256 $(MACOS_TGZ) >./$(MACOS_TGZ).checksum
+
+release-linux: build pkg-release-linux
+
+release-macos: build pkg-release-macos
+