[DOC] update readme

Issue: X-190

README.md

@@ -18,8 +18,7 @@ Copy the extension folder to `\typo3conf\ext\ `, upload it via the extension
 manager or add it to your composer.json (`composer require tritum/repeatable-form-elements`).
 Add the static TypoScript configuration to your TypoScript template.
 
-Make sure, jQuery is available in the frontend.
-We have tested with TYPO3 v12.4 and jQuery v3.7.1.
+We have tested with TYPO3 v11.5 and v12.4.
 
 ## Usage
 
@@ -32,6 +31,18 @@ Add the desired fields with the favored validators to the "Repeatable container"
 The frontend will render the "Repeatable container" as fieldset. In addition to the
 included form elements it will display buttons for copying/ removing new sets of fields.
 
+## Configuration
+
+To deactivate the copying of variants, the feature `repeatableFormElements.copyVariants` can be used
+
+## Extendability
+
+The following options can be used to extend the behavior when copying.
+
+| Name | Description                                                      |
+| ---- |------------------------------------------------------------------|
+| CopyVariantEvent | Extend manipulation of copied variants or disable specific ones. |
+
 ## Credits
 
 This TYPO3 extension was created by Ralf Zimmermann (https://www.tritum.de).
@@ -43,3 +54,7 @@ The fine people at www.b13.de connected all the people involved.
 
 Elias Häußler - haeussler.dev - for helping with TYPO3v11 compatability and providing
 the beautiful [TYPO3 badges](https://typo3-badges.dev). Use them. Give him some kudos!
+
+Uwe - Hawkeye1909 - for removing jQuery as dependency.
+
+especially to all others who have contributed to the improvement of the extension.