gistfile1.json

# app/assets/javascript

{  
   "name":"My App",
       "short_name":"my-app",
       "start_url":"/",
       "icons":[  
            {  
                     "src":"/images/my-push-logo-192x192.png",
                     "sizes":"192x192",
                     "type":"image/png"         

      }      
   ]
}