Update Readme

Author: uttamukkoji

CHANGELOG.md

@@ -1,4 +1,8 @@
 # Changelog
+## [1.1.0](https://github.com/contentstack/contentstack-utils-php/tree/v1.1.0) (2021-07-16)
+  - JSON RTE to html content functionality for GQL API added
+## [1.0.1](https://github.com/contentstack/contentstack-utils-php/tree/v1.0.1) (2021-07-16)
+  - JSON RTE to html content functionality added
 
 ## [1.0.0](https://github.com/contentstack/contentstack-utils-php/tree/v1.0.0) (2021-04-05)
   - Initial release for Contentstack Utils SDK

README.md

@@ -158,3 +158,15 @@ for($i = 0; $i < count($result[0]); $i++) {
 	$render_rich_text = Contentstack::jsonToHtml($entry['rich_text_content'], new Option($entry));  
 }
 ```
+#### GQL 
+
+To Convert JSON RTE content to HTML from GQL API. Use `GQL::jsonToHtml` function as shown below:
+
+```php
+use Contentstack\Utils\GQL;
+use Contentstack\Utils\Model\Option;  
+// GQL fetch API
+... 
+	$render_html_text = GQL::jsonToHtml($entry->rich_text_content,, new Option());
+...
+```