Makefile: add easy target for validation

Hopefully soon adding integration tests for the cli

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

Makefile

@@ -0,0 +1,35 @@
+
+SOURCE_FILES := $(shell find . -type f -name "*.go")
+
+default: validation build
+
+.PHONY: validation
+validation: test lint vet
+
+.PHONY: test
+test: .test
+
+.test: $(SOURCE_FILES)
+	go test -v ./... && touch $@
+
+.PHONY: lint
+lint: .lint
+
+.lint: $(SOURCE_FILES)
+	golint -set_exit_status ./... && touch $@
+
+.PHONY: vet
+vet: .vet
+
+.vet: $(SOURCE_FILES)
+	go vet ./... && touch $@
+
+.PHONY: build
+build: gomtree
+
+gomtree: $(SOURCE_FILES)
+	go build ./cmd/gomtree
+
+clean:
+	rm -rf gomtree
+