add Makefile

Makefile

@@ -0,0 +1,13 @@
+export GO ?= go
+
+.PHONY: all
+all: wireproxy
+
+.PHONY: wireproxy
+wireproxy:
+	tag="$$(git describe --tag 2>/dev/null)" && \
+	${GO} build -ldflags "-X 'main.version=$$tag'" ./cmd/wireproxy
+
+.PHONY: clean
+clean:
+	${RM} wireproxy