Added middleware support

Response.go

@@ -1,24 +0,0 @@
-package server
-
-import "net/http"
-
-// Response is the interface for an HTTP response.
-type Response interface {
-	Header(key string) string
-	SetHeader(key string, value string)
-}
-
-// response represents the HTTP response used in the given context.
-type response struct {
-	http.ResponseWriter
-}
-
-// Header returns the header value for the given key.
-func (res response) Header(key string) string {
-	return res.ResponseWriter.Header().Get(key)
-}
-
-// SetHeader sets the header value for the given key.
-func (res response) SetHeader(key string, value string) {
-	res.ResponseWriter.Header().Set(key, value)
-}