updated banner

README.md

-[![Banner](http://i.imgur.com/SZIVXEg.png)](https://github.com/Roxxers)
+[![Banner](https://i.imgur.com/sHm0Jas.png)](https://github.com/Roxxers)
 
 [![MIT](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=for-the-badge&maxAge=300)](https://gitlab.roxxers.xyz/roxxers/roxbot/blob/master/LICENSE)
 [![Python](https://img.shields.io/badge/Python-3.5%2B-blue.svg?style=for-the-badge&maxAge=300)](https://gitlab.roxxers.xyz/roxxers/roxbot)