Add vendor to improve building speed.

This also adds ability to be built in network-constrained environment.

vendor/github.com/leodido/go-urn/makefile

@@ -0,0 +1,51 @@
+SHELL := /bin/bash
+RAGEL := ragel
+GOFMT := go fmt
+
+export GO_TEST=env GOTRACEBACK=all go test $(GO_ARGS)
+
+.PHONY: build
+build: machine.go
+
+.PHONY: clean
+clean:
+	@rm -rf docs
+	@rm -f machine.go
+
+.PHONY: images
+images: docs/urn.png
+
+.PHONY: snake2camel
+snake2camel:
+	@cd ./tools/snake2camel; go build -o ../../snake2camel .
+
+.PHONY: removecomments
+removecomments:
+	@cd ./tools/removecomments; go build -o ../../removecomments .
+
+machine.go: machine.go.rl
+
+machine.go: snake2camel
+
+machine.go: removecomments
+
+machine.go:
+	$(RAGEL) -Z -G1 -e -o $@ $<
+	@./removecomments $@
+	@./snake2camel $@
+	$(GOFMT) $@
+
+docs/urn.dot: machine.go.rl
+	@mkdir -p docs
+	$(RAGEL) -Z -e -Vp $< -o $@
+
+docs/urn.png: docs/urn.dot
+	dot $< -Tpng -o $@
+
+.PHONY: bench
+bench: *_test.go machine.go
+	go test -bench=. -benchmem -benchtime=5s ./...
+
+.PHONY: tests
+tests: *_test.go
+	$(GO_TEST) ./...