add signin function

lib/main-dev.dart

@@ -1,7 +1,6 @@
+import 'package:fcs/config.dart';
 import 'package:flutter/material.dart';
 import 'package:logging/logging.dart';
-import 'package:fcs/config.dart';
-import 'package:shared_preferences/shared_preferences.dart';
 
 import 'app.dart';
 
@@ -9,8 +8,7 @@ void main() {
   Config(
       flavor: Flavor.DEV,
       color: Colors.blue,
-      apiURL:
-          "https://asia-northeast1-mokkon-wholesale-dev.cloudfunctions.net/APIOK",
+      apiURL: "http://192.168.100.11:7777",
       reportURL: "http://petrok-dev.mokkon.com:8080",
       reportProjectID: "dev",
       level: Level.ALL);