Add branding image and hidden wrapper to README

A branding image for Laravel Whatsapp Widget was introduced and wrapped in a hidden HTML div. This enhances the visual presentation of the README without affecting its layout.

Author: jeffersongoncalves

README.md

@@ -1,3 +1,9 @@
+<div class="filament-hidden">
+
+![Laravel Created By](https://raw.githubusercontent.com/jeffersongoncalves/laravel-whatsapp-widget/master/art/jeffersongoncalves-laravel-whatsapp-widget.png)
+
+</div>
+
 # Laravel Whatsapp Widget
 
 [![Latest Version on Packagist](https://img.shields.io/packagist/v/jeffersongoncalves/laravel-whatsapp-widget.svg?style=flat-square)](https://packagist.org/packages/jeffersongoncalves/laravel-whatsapp-widget)