Document events

USAGE.md

@@ -15,10 +15,35 @@ The extension has the following configuration options:
 - **Category EAV Attributes**: Category attributes to include when listing categories in a specific event.
 - **Customer EAV Attributes**: Customer attributes to include when listing customers in a specific event. Currently this is not implemented fully because of privacy regulations.
 
+# Implemented events
+The following events are implemented in the current version:
+
+- `add_payment_info`
+- `add_shipping_info`
+- `add_to_cart`
+- `add_to_wishlist`
+- `begin_checkout`
+- `login`
+- `logout`
+- `purchase`
+- `remove_from_cart`
+- `sign_up`
+- `view_cart`
+- `view_item_list_event`
+- `view_item_event`
+- `view_search_result`
+
+If you think an event is missing, post a GitHub Issue to kickstart such an initiative.
+
+The following events are not implemented because a lack of inspiration:
+- `view_promotion`
+- `select_promotion`
+
+The following events should actually be implemented via a server-side implementation:
+- `refund`
+
 # Tip: Browser extension
-Use the [DataLayer
-Checker](https://chrome.google.com/webstore/detail/datalayer-checker/ffljdddodmkedhkcjhpmdajhjdbkogke) for Chrome to
-easily see what kind of data is sent from Magento to Google Tag Manager.
+Use the [DataLayer Checker](https://chrome.google.com/webstore/detail/datalayer-checker/ffljdddodmkedhkcjhpmdajhjdbkogke) for Chrome to easily see what kind of data is sent from Magento to Google Tag Manager.
 
 # Tip: CheckoutTester2
 When you want to track conversions in your Magento checkout, our extension helps out as well: It adds the relevant information to all your checkout and cart pages. Do you want to know which variables are on the success page? Use the [Yireo CheckoutTester](https://github.com/yireo/Yireo_CheckoutTester2) extension to preview that page and view its HTML source.