Updated README.md

README.md

@@ -40,9 +40,9 @@ Please see the ```docker``` branch
 A Node.js implementation is available in the ```node``` branch, maintained by [dunklesToast](https://github.com/dunklesToast).
 
 ## Donate
-If you want to support this project, you can  
-[Send a donation via PayPal](https://www.paypal.me/sineisochronic).  
-Send ETH at this address: 0x8A5273d4e2618c4cff2C62d8EB731701FceEd8E3
+[![Donate with Liberapay](https://liberapay.com/assets/widgets/donate.svg)](https://liberapay.com/fdossena/donate)  
+[Donate with PayPal](https://www.paypal.me/sineisochronic)  
+Send ETH at this address: ```0x8A5273d4e2618c4cff2C62d8EB731701FceEd8E3```
 
 ## License
 Copyright (C) 2016-2018 Federico Dossena