add eslint

src/App.html

@@ -1,5 +1,5 @@
 <h1>
-	rrweb player playground
+  rrweb player playground
 </h1>
 <Player />
 
@@ -7,11 +7,10 @@
 </style>
 
 <script>
-	import Player from './Player.html';
-
-	export default {
-		components: {
-			Player
-		}
-	}
+  import Player from './Player.html';
+  export default {
+    components: {
+      Player,
+    },
+  };
 </script>