Merge pull request #333 from nstringham/maskable-icon

add Maskable icon

Author: devrsi0n

public/favicon-maskable.png

@@ -3,9 +3,15 @@
   "name": "2048 game",
   "icons": [
     {
-      "src": "favicon.ico",
-      "sizes": "192x192",
+      "src": "favicon.png",
+      "sizes": "450x450",
       "type": "image/png"
+    },
+    {
+      "src": "favicon-maskable.png",
+      "sizes": "550x550",
+      "type": "image/png",
+      "purpose": "maskable"
     }
   ],
   "start_url": "./index.html",