fixed router.ServeHTTP

added in middleware: Cors and Helmet

example/main.go

@@ -5,11 +5,16 @@ import (
 	"net/http"
 
 	"gitserver.in/patialtech/mux"
+	"gitserver.in/patialtech/mux/middleware"
 )
 
 func main() {
 	// create a new router
 	r := mux.NewRouter()
+	r.Use(middleware.CORS(middleware.CORSOption{
+		AllowedOrigins: []string{"*"},
+		MaxAge:         60,
+	}))
 
 	// you can use any middleware that is: "func(http.Handler) http.Handler"
 	// so you can use any of it