Remove Patreon info from README

Author: NT7S

README.md

@@ -8,7 +8,7 @@ This library is focused towards usage in RF/amateur radio applications, but it m
 
 Thanks For Your Support!
 ------------------------
-If you would like to support my library development efforts, I would ask that you please consider purchasing a Si5351A Breakout Board from my [online store at etherkit.com](https://www.etherkit.com) and/or becoming my patron on [Patreon](https://www.patreon.com/NT7S). Thank you!
+If you would like to support my library development efforts, I would ask that you please consider purchasing a Si5351A Breakout Board from my [online store at etherkit.com](https://www.etherkit.com) and/or sending a [PayPal tip](https://paypal.me/NT7S). Thank you!
 
 Library Installation
 ---------------------