diff --git a/www-site/git_modules/zjwgi b/www-site/git_modules/zjwgi
index fc8b2afd7b3d4de22f55142967ebca28156c0278..41774121b8504c214b703c326e634b4e1b32bf24 160000
--- a/www-site/git_modules/zjwgi
+++ b/www-site/git_modules/zjwgi
@@ -1 +1 @@
-Subproject commit fc8b2afd7b3d4de22f55142967ebca28156c0278
+Subproject commit 41774121b8504c214b703c326e634b4e1b32bf24
diff --git a/www-site/manifest.json b/www-site/manifest.json
new file mode 100644
index 0000000000000000000000000000000000000000..c985d3bd1cfd028efe5f6a8ca7d734df0defca16
--- /dev/null
+++ b/www-site/manifest.json
@@ -0,0 +1,19 @@
+{
+    "name": "git-tutorial",
+    "short_name": "git-tutorial",
+    "description": "",
+    "start_url": "/",
+    "theme_color": "#eeffee",
+    "background_color": "#eeffee",
+    "display": "standalone",
+    "icons": [
+        {
+        "src": "icons/icon48.png",
+        "sizes": "48x48"
+        },
+        {
+        "src": "icons/icon144.png",
+        "sizes": "144x144"
+        }      
+    ]
+}
\ No newline at end of file