You can push a notification from Terminal using cURL: 
        
curl -H "Content-Type: application/json" \
     -X POST \
     -d '{"title":"Important!", "body":"Dogecoin is going to the moon!", "icon":"logo.png"}' \
     https://api2.scaledrone.com/KtJ2qzn3CF3svSFe/notifications/publish