remove unused handler and add comments for new upload handler.

main.go

 
 	//fs := http.FileServer(http.Dir("/mnt/data/workspace/angular.ts/ng2-admin/dist"))
 	fs := http.FileServer(http.Dir("/mnt/data/workspace/angular.ts/wechat/ng2-admin/dist"))
-
 	//http.Handle("/test", http.StripPrefix("/test", fs))
 	http.Handle("/", fs)
 	//setup handler
 	//http.HandleFunc("/", webrootHandler)
-	//http.HandleFunc("/api", apiV1Main)
-	http.HandleFunc("/api", uploadHandler)
-	//http.ListenAndServe("127.0.0.1:65500", nil)
-	//CreateDefaultMenu()
+	http.HandleFunc("/api", apiV1Main)
+	http.HandleFunc("/upload", uploadHandler)
 	http.ListenAndServe(":65500", nil)
 }

server.go

 	}
 }
 
+//save uploaded 'file' into temporary location
 func uploadHandler(w http.ResponseWriter, r *http.Request) {
-	r.ParseMultipartForm(32 << 20)
-	file, handler, err := r.FormFile("file")
+	r.ParseMultipartForm(32 << 20)           //32MB memory
+	file, handler, err := r.FormFile("file") //form-field 'file'
 	if err != nil {
 		fmt.Println(err)
 		return