README.md in pushpad-0.8.0 vs README.md in pushpad-0.9.0

@@ -98,10 +98,13 @@
     }
   ],
   starred: true, # optional, bookmark the notification in the Pushpad dashboard (e.g. to highlight manual notifications)
   # optional, use this option only if you need to create scheduled notifications (max 5 days)
   # see https://pushpad.xyz/docs/schedule_notifications
-  send_at: Time.utc(2016, 7, 25, 10, 9)
+  send_at: Time.utc(2016, 7, 25, 10, 9),
+  # optional, add the notification to custom categories for stats aggregation
+  # see https://pushpad.xyz/docs/monitoring
+  custom_metrics: ['examples', 'another_metric'] # up to 3 metrics per notification
 })
 
 # deliver to a user
 notification.deliver_to user # or user_id