update example

Examples/simple-fcm-client/app/FirebaseClient.js

@@ -12,15 +12,7 @@ class FirebaseClient {
   }
 
   sendNotification(token) {
-    let body = {
-    	"to": token,
-      "notification":{
-    		"title": "Simple FCM Client",
-    		"body": "This is a notification with only NOTIFICATION.",
-    		"sound": "default"
-    	},
-    	"priority": 10
-    }
+    let body;
 
     if(Platform.OS === 'android'){
       body = {
@@ -30,11 +22,22 @@ class FirebaseClient {
 						"title": "Simple FCM Client",
 						"body": "This is a notification with only NOTIFICATION.",
 						"sound": "default",
-		"priority": "high"
+						"priority": "high",
+						"show_in_foreground": true
         	}
     		},
     		"priority": 10
       }
+    } else {
+			body = {
+				"to": token,
+				"notification":{
+					"title": "Simple FCM Client",
+					"body": "This is a notification with only NOTIFICATION.",
+					"sound": "default"
+				},
+				"priority": 10
+			}
 		}
 
     this._send(JSON.stringify(body), "notification");