more simplify structure

server.go

@@ -0,0 +1,25 @@
+/*----------------------------------------------------------------------------------------
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See LICENSE in the project root for license information.
+ *---------------------------------------------------------------------------------------*/
+
+package main
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/microsoft/vscode-remote-try-go/hello"
+)
+
+func handle(w http.ResponseWriter, r *http.Request) {
+	io.WriteString(w, hello.Hello())
+}
+
+func main() {
+	portNumber := "5000"
+	http.HandleFunc("/", handle)
+	fmt.Println("Server listening on port ", portNumber)
+	http.ListenAndServe(":"+portNumber, nil)
+}