Update README.md

Author: avnerh1

plugins/inappstore/README.md

@@ -10,26 +10,35 @@ var _appstore = null
 func check_events():
     while _appstore.get_pending_event_count() > 0:
         var event = inappstore.pop_pending_event()
-        match event.type:
-            'product_info':
-                ...
-            'purchase':
-                ...
-            'restore':
-                ...
-
-func _on_Button_button_down():
-	var result = _appstore.restore_purchases()
+	if event.result=="ok": # other possible values are "progress", "error", "unhandled"
+	
+	    # print(event.product_id)
+            match event.type:
+                'product_info':
+		    # fields: titles, descriptions, prices, ids, localized_prices, currency_codes, invalid_ids
+		    ...
+                'purchase':
+		    # fields: product_id, transaction_id, receipt		
+                    ...
+                'restore':
+		    # fields: product_id, transaction_id, receipt		
+                    ...
+	
+func _on_Purchase_button_down():
+    var result = _appstore.restore_purchases()
     ...
 
     var result = _appstore.purchase({'product_id': "product_1"})
     ...
-...
 
+func _on_Restore_button_down(): # such button is required by Apple for non-consumable products
+    var result = _appstore.restore_purchases()
+    ...
+    
 func _ready():
-	if Engine.has_singleton("InAppStore"):
-		_appstore = Engine.get_singleton('InAppStore')
-		var result = _appstore.request_product_info( { "product_ids": ["product_1", "product_2"] } )
+    if Engine.has_singleton("InAppStore"):
+        _appstore = Engine.get_singleton('InAppStore')
+	var result = _appstore.request_product_info( { "product_ids": ["product_1", "product_2"] } )
         if result == OK:
             print("Successfully started product info request")
             _appstore.set_auto_finish_transaction(true)
@@ -41,8 +50,8 @@ func _ready():
             timer.start()
         else:
             print("failed requesting product info")
-	else:
-		print("no app store plugin")
+    else:
+        print("no app store plugin")
 ```
 
 ## Methods