docs: update new method documentation

README.md

@@ -66,9 +66,18 @@ The above markup would send the following event data when clicked:
 
 | Field           | Value          |
 | --------------- | -------------- |
-| `eventCategory` | `home`         |
-| `eventAction`   | `register cta` |
-| `eventLabel`    | `null`         |
+| `eventCategory` | `home`          |
+| `eventAction`   | `register cta`  |
+| `eventLabel`    | `null`          |
+
+GA4 event tracking is also supported, example:
+
+| `data-track` value                   | `category` | `action`  | `label`         |
+|:--------------------------------------|:----------------|:---------------|:---------------------|
+| `"nav;click;new page"`                | `nav`            | `click`        | `new page`           |
+| `"form;submit;contact us"`            | `form`           | `submit`       | `contact us`         |
+| `"button;click;download brochure"`    | `button`         | `click`        | `download brochure`  |
+| `"play video"`                        | *(none)*         | `play video`   | *(none)*             |
 
 ---
 
@@ -169,4 +178,12 @@ Parameters:
 
 ---
 
+#### `sendPageView(pagePath: string)`
+Manually send a page_view event to Google Analytics 4.
+
+Parameters:
+* `pagePath: string` (optional) — The path of the page to report. Defaults to the current location pathname.
+
+---
+
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