close #27

This was easier than expected. Added a number of atttributes to the `manifest.json` file that allows for proper PWA installation.

src/manifest.json

@@ -1,41 +1,44 @@
 {
- "name": "App",
- "icons": [
-  {
-   "src": "/favicons/android-icon-36x36.png",
-   "sizes": "36x36",
-   "type": "image/png",
-   "density": "0.75"
-  },
-  {
-   "src": "/favicons/android-icon-48x48.png",
-   "sizes": "48x48",
-   "type": "image/png",
-   "density": "1.0"
-  },
-  {
-   "src": "/favicons/android-icon-72x72.png",
-   "sizes": "72x72",
-   "type": "image/png",
-   "density": "1.5"
-  },
-  {
-   "src": "/favicons/android-icon-96x96.png",
-   "sizes": "96x96",
-   "type": "image/png",
-   "density": "2.0"
-  },
-  {
-   "src": "/favicons/android-icon-144x144.png",
-   "sizes": "144x144",
-   "type": "image/png",
-   "density": "3.0"
-  },
-  {
-   "src": "/favicons/android-icon-192x192.png",
-   "sizes": "192x192",
-   "type": "image/png",
-   "density": "4.0"
-  }
- ]
+    "name": "Puter",
+    "short_name": "Puter",
+    "display": "standalone",
+    "start_url": "/",
+    "icons": [
+        {
+            "src": "/favicons/android-icon-36x36.png",
+            "sizes": "36x36",
+            "type": "image/png",
+            "density": "0.75"
+        },
+        {
+            "src": "/favicons/android-icon-48x48.png",
+            "sizes": "48x48",
+            "type": "image/png",
+            "density": "1.0"
+        },
+        {
+            "src": "/favicons/android-icon-72x72.png",
+            "sizes": "72x72",
+            "type": "image/png",
+            "density": "1.5"
+        },
+        {
+            "src": "/favicons/android-icon-96x96.png",
+            "sizes": "96x96",
+            "type": "image/png",
+            "density": "2.0"
+        },
+        {
+            "src": "/favicons/android-icon-144x144.png",
+            "sizes": "144x144",
+            "type": "image/png",
+            "density": "3.0"
+        },
+        {
+            "src": "/favicons/android-icon-192x192.png",
+            "sizes": "192x192",
+            "type": "image/png",
+            "density": "4.0"
+        }
+    ]
 }