Update README

README.md

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 adminbsb-material-design-bundle
 ===============================
 
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@@ -9,6 +11,8 @@ adminbsb-material-design-bundle
 ![Packagist license](https://img.shields.io/packagist/l/webeweb/adminbsb-material-design-bundle.svg?style=for-the-badge&colorF28D1A&logo=data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIGZpbGw9Im5vbmUiIHN0cm9rZT0iI0ZGRiIgdmlld0JveD0iMCAwIDI0IDI0Ij48cGF0aCBzdHJva2UtbGluZWNhcD0icm91bmQiIHN0cm9rZS1saW5lam9pbj0icm91bmQiIHN0cm9rZS13aWR0aD0iMiIgZD0ibTMgNiAzIDFtMCAwLTMgOWE1LjAwMiA1LjAwMiAwIDAgMCA2LjAwMSAwTTYgN2wzIDlNNiA3bDYtMm02IDIgMy0xbS0zIDEtMyA5YTUuMDAyIDUuMDAyIDAgMCAwIDYuMDAxIDBNMTggN2wzIDltLTMtOS02LTJtMC0ydjJtMCAxNlY1bTAgMTZIOW0zIDBoMyIvPjwvc3ZnPg==)
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+</div>
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 Integrate AdminBSB Material Design theme with Symfony 4 and more.
 
 > IMPORTANT NOTICE: This package is still under development. Any changes will be