Update README.md - 2024-04-29

README.md

@@ -12,15 +12,28 @@ composer require fsylum/rector-wordpress --dev
 
 ## Use Sets
 
-To add a set to your config, use `Fsylum\RectorWordPress\Set\WordPressSetList` class and pick one of the constants:
+To add a set to your config, use `Fsylum\RectorWordPress\Set\WordPressSetList` class and pick one of the constants. For example, to update the codebase to WordPress 6.4, use `WordPressSetList::WP_6_4`.
 
 ```php
 use Fsylum\RectorWordPress\Set\WordPressSetList;
 use Rector\Config\RectorConfig;
 
 return static function (RectorConfig $rectorConfig): void {
     $rectorConfig->sets([
-        WordPressSetList::WP_6_4
+        WordPressSetList::WP_6_4,
+    ]);
+};
+```
+
+You can also use a level set list to include all the applicable rules from the lowest version, 0.71 up to the one you specified. For example, `WordPressLevelSetList::UP_TO_WP_6_4` will include all the rules from WordPress 0.71 up to 6.4. In most cases, this is the preferable way to transform your code as you only need to specify it once.
+
+```php
+use Fsylum\RectorWordPress\Set\WordPressLevelSetList;
+use Rector\Config\RectorConfig;
+
+return static function (RectorConfig $rectorConfig): void {
+    $rectorConfig->sets([
+        WordPressLevelSetList::UP_TO_WP_6_4,
     ]);
 };
 ```