add Ko-fi badge to README.md

Author: myTerminal

README.md

@@ -6,7 +6,8 @@
 [![Docker Stars](https://img.shields.io/docker/stars/myterminal/super-emacs.svg)](https://hub.docker.com/r/myterminal/super-emacs)
 [![Docker Pulls](https://img.shields.io/docker/pulls/myterminal/super-emacs.svg)](https://hub.docker.com/r/myterminal/super-emacs)  
 [![License](https://img.shields.io/badge/LICENSE-GPL%20v3.0-blue.svg)](https://www.gnu.org/licenses/gpl.html)
-[![Join the chat at https://gitter.im/myTerminal/super-emacs](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/myTerminal/super-emacs?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Join the chat at https://gitter.im/myTerminal/super-emacs](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/myTerminal/super-emacs?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)  
+[![ko-fi](https://ko-fi.com/img/githubbutton_sm.svg)](https://ko-fi.com/Y8Y5E5GL7)
 
 An out-of-the-box Emacs configuration with super-powers