Add missing ongoing flag

src/android/Receiver.java

@@ -126,7 +126,8 @@ public class Receiver extends BroadcastReceiver {
         .setSmallIcon(options.getSmallIcon())
         .setLargeIcon(icon)
         .setSound(options.getSound())
-        .setAutoCancel(options.getAutoCancel());
+        .setAutoCancel(options.getAutoCancel())
+        .setOngoing(options.getOngoing());
 
         setClickEvent(notification);
 
@@ -176,4 +177,4 @@ public class Receiver extends BroadcastReceiver {
     private void fireTriggerEvent () {
         LocalNotification.fireEvent("trigger", options.getId(), options.getJSON());
     }
-}
+}