Polling background fetching

Author: Satish Yadav

db.json

@@ -14,6 +14,11 @@
 			"id": 3,
 			"name": "Wonder Woman",
 			"alterEgo": "Princess Diana"
+		},
+		{
+			"id": 4,
+			"name": "Spider Man",
+			"alterEgo": "Petter Parker"
 		}
 	],
 	"friends": [

src/components/RQSuperHeroes.page.jsx

@@ -10,7 +10,8 @@ function RQSuperHeroesPage() {
 		['super-heros'],
 		fetchSuperHeroes,
         {
-            refetchInterval: 2000
+            refetchInterval: 2000,
+            refetchIntervalInBackground: true
         }
 	);