Actually use rate limited storage, add /version with -dirty

main.go

@@ -7,10 +7,13 @@ import (
 	"log"
 )
 
+var GitCommit string
+
 func main() {
 	c := config.New()
 	log.Println(c)
-	g := storage.NewGraph()
+	g := storage.NewRateLimitedGraph()
+	view.GitCommit = GitCommit
 	if err := view.JSON(g); err != nil {
 		panic(err)
 	}