fixed recipes for static middleware change

Signed-off-by: Vishal Rana <vr@labstack.com>

group.go

@@ -19,7 +19,11 @@ func (g *Group) Use(middleware ...MiddlewareFunc) {
 	// Allow requests `/prefix & /prefix/*` to reach the group as they might get
 	// dropped if router doesn't find a match, making none of the group middleware
 	// execute.
-	g.Any("", NotFoundHandler, g.middleware...)
+	p := ""
+	if g.prefix == "" {
+		p = "/"
+	}
+	g.Any(p, NotFoundHandler, g.middleware...)
 	g.Any("/*", NotFoundHandler, g.middleware...)
 }
 

middleware/static.go

@@ -16,7 +16,7 @@ type (
 		Skipper Skipper
 
 		// Prefix to strip from the request URL path.
-		// Required.
+		// Optional. Default value "".
 		Prefix string `json:"root"`
 
 		// Root directory from where the static content is served.
@@ -48,9 +48,8 @@ var (
 
 // Static returns a Static middleware to serves static content from the provided
 // root directory.
-func Static(prefix, root string) echo.MiddlewareFunc {
+func Static(root string) echo.MiddlewareFunc {
 	c := DefaultStaticConfig
-	c.Prefix = prefix
 	c.Root = root
 	return StaticWithConfig(c)
 }