update README

README.md

@@ -154,9 +154,10 @@ See an example of [product](https://github.com/code-with-max/godot-google-play-i
 > But if you are planning to switch to this version, you should know that I have implemented two separate functions for buying products and subscribing to plans.
 
 ---
-`purchase(id: List<String>, is_personalized: bool)`: purchase a product from Google Play Billing.  
-`id`: ID of the product or subscription wrapped in a list.  
-`is_personalized`: This is to ensure compliance with the [EU directive](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02011L0083-20220528), you can clarify this [here](https://developer.android.com/google/play/billing/integrate#personalized-price), but if you don't understand why, just set it to `false`.
+`purchase(product_id: List<String>, is_personalized: bool)`: purchase a product from Google Play Billing.  
+
+- `product_id`: ID of the product wrapped in a list.  
+- `is_personalized`: This is to ensure compliance with the [EU directive](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02011L0083-20220528), you can clarify this [here](https://developer.android.com/google/play/billing/integrate#personalized-price), but if you don't understand why, just set it to `false`.  
 
 Emit signals:
 
@@ -167,7 +168,43 @@ Emit signals:
 - `purchase_update_error`: If there is an error updating the purchase information.  
 
 > [!IMPORTANT]
-> Do not forget consume or acknowledge the purchase.
+> Do not forget **consume or acknowledge** the purchase.
+
+---
+`subscribe(subscription_id: List<String>, base_plan_id: List<String>, is_personalized: bool)`: subscribe to a subscription plan from Google Play Billing.  
+
+- `subscription_id`: ID of the subscription wrapped in a list.  
+- `base_plan_id`: ID of the base subscription plan wrapped in a list.  
+- `is_personalized`: This is to ensure compliance with the [EU directive](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02011L0083-20220528), you can clarify this [here](https://developer.android.com/google/play/billing/integrate#personalized-price), but if you don't understand why, just set it to `false`.  
+
+Emit signals:
+
+- `purchase_updated`: Emitted when the purchase information is updated. The purchase process was successful. [Example of response](https://github.com/code-with-max/godot-google-play-iapp/blob/master/examples/purchase_updated_subs.json)  
+`query_product_details_error`: If an error occurred while receiving information about the subscription being purchased.  
+- `purchase_error`: If there is an error during the purchase process.  
+- `purchase_cancelled`: If a purchase is cancelled by the user.  
+- `purchase_update_error`: If there is an error updating the purchase information.  
+
+> [!IMPORTANT]
+> Do not forget **acknowledge** the subscription.
+
+---
+`consumePurchase(purchase["purchase_token"]`: consume a purchase from Google Play Billing.  
+`purchase["purchase_token"]`: Purchase token from purchase updated [response](https://github.com/code-with-max/godot-google-play-iapp/blob/master/examples/purchase_updated_inapp.json).
+
+Emit signals:
+
+- `purchase_consumed`: If a purchase is successfully consumed.  
+- `purchase_consumed_error`: If there is an error consuming the purchase.
+
+---
+`acknowledgePurchase(purchase["purchase_token"])`: acknowledge a purchase from Google Play Billing.  
+`purchase["purchase_token"]`: Purchase token from purchase updated response.
+
+Emit signals:
+
+- `purchase_acknowledged`: If a purchase is successfully acknowledged.  
+- `purchase_acknowledged_error`: If there is an error acknowledging the purchase.
 
 ---