update build routine in Makefile

Makefile

@@ -13,7 +13,7 @@ test: setup
 
 define __create_dist()
 	mkdir -p dist/$(1)_$(2)/$(DIST)
-	GOOS=$1 GOARCH=$2 go build -o dist/$(1)_$(2)/$(DIST)/$(NAME)$(3) main.go
+	GOOS=$1 GOARCH=$2 go build -o dist/$(1)_$(2)/$(DIST)/$(NAME)$(3) main.go args.go timer.go
 	cp -r README.md LICENSE dist/$(1)_$(2)/$(DIST)
 	tar cvfz dist/$(DIST)_$(1)_$(2).tar.gz -C dist/$(1)_$(2) $(DIST)
 endef
@@ -24,8 +24,8 @@ dist: all
 	@$(call __create_dist,windows,amd64,.exe)
 	@$(call __create_dist,linux,amd64,)
 
-build: main.go
-	go build -o $(NAME) -v main.go
+build: main.go args.go timer.go
+	go build -o $(NAME) -v main.go args.go timer.go
 
 clean:
 	@rm -f nml *~

timer_test.go

@@ -0,0 +1,7 @@
+package main
+
+import "testing"
+
+func TestDuration(t *testing.T) {
+
+}