Add kofi link to readme - please buy me coffee ^.^

ReadMe.md

@@ -52,7 +52,10 @@ For app feedback, bugs, and feature requests, please [create an issue here](http
 
 You can find me (0xchocolate) on discord as @cococode.
 
-If you'd like to donate to the app development effort:  
+If you'd like to donate to the app development effort:
+
+[![ko-fi](https://ko-fi.com/img/githubbutton_sm.svg)](https://ko-fi.com/O4O1R7X6K)
+
 **ETH**: `0xf32A1F0CD6122C97d8953183E53cB889cc087C9b`  
 **BTC**: `bc1qtw7s25cwdkuaups22yna8sttfxn0usm2f35wc3`