Merge pull request #561 from stevvooe/correct-versioning

version: finish version setup

cmd/containerd/main.go

@@ -40,6 +40,12 @@ var (
 	global = log.WithModule(gocontext.Background(), "containerd")
 )
 
+func init() {
+	cli.VersionPrinter = func(c *cli.Context) {
+		fmt.Println(c.App.Name, containerd.Package, c.App.Version)
+	}
+}
+
 func main() {
 	app := cli.NewApp()
 	app.Name = "containerd"