Update index.html

index.html

@@ -3,6 +3,7 @@
     <head>
         <meta charset="UTF-8">
         <meta name="viewport" content="width=device-width, user-scalable=no" />
+        <link rel="shortcut icon" type="image/png" href="favicon.png">
         <style>
             * {
                 box-sizing: border-box;