Added middleware documentation

README.md

@@ -34,6 +34,17 @@ s.Get("/images/*file", func(ctx web.Context) error {
 	return ctx.String(ctx.Request().Param("file"))
 })
 
+// Middleware
+s.Use(func(ctx web.Context) error {
+	start := time.Now()
+
+	defer func() {
+		fmt.Println(ctx.Request().Path(), time.Since(start))
+	}()
+
+	return ctx.Next()
+})
+
 s.Run(":8080")
 ```