fix login

@@ -20,7 +20,8 @@ exports.beforeIn = (req, res, next) => {
         if (req.xhr) {
             return res.json({
                 code: 401,
-                message: '抱歉,您还未登录'
+                message: '抱歉,您还未登录',
+                redirect: '/signin.html'
             });
         }
 

@@ -107,6 +107,9 @@ var page = {
         $.post('/activity/vip-day/signin.json?app_version=1&uid=' + yoho.getUid()).done(function(res) {
             if (res.code !== 200) {
                 tip.show(res.message || '签到失败');
+                if (res.redirect) {
+                    location.href = res.redirect;
+                }
                 return;
             }