fix version

Makefile

@@ -1,15 +1,23 @@
+VERSION ?= $(shell git describe --tags 2>/dev/null)
+ifeq "$(VERSION)" ""
+	VERSION := UNKNOWN
+endif
 
 .PHONY: \
-	all 
+	all \
+	test
 
 all: bin/pomo
 
 clean: 
-	rm -v bin/pomo bindata.go
+	rm -v bin/* 2> /dev/null || true
 
 bindata.go:
 	go-bindata -pkg main -o $@ tomato-icon.png
 
+test:
+	go test ./...
+
 bin/pomo: bindata.go
-	mkdir bin 2>/dev/null
-	go build -o bin/pomo
+	@echo mkdir bin 2>/dev/null || true
+	go build -ldflags "-X main.Version=$(VERSION)" -o bin/pomo

main.go

@@ -97,7 +97,7 @@ func main() {
 	var (
 		path = app.StringOpt("p path", defaultConfigPath(), "path to the pomo config directory")
 	)
-	app.Version("v version", version)
+	app.Version("v version", Version)
 	app.Command("start s", "start a new task", start(path))
 	app.Command("init", "initialize the sqlite database", initialize(path))
 	app.Command("list l", "list historical tasks", list(path))

version.go

@@ -1,3 +1,3 @@
 package main
 
-var version = "undefined"
+var Version = "undefined"