Update README.md

Author: luc-github

README.md

@@ -35,11 +35,11 @@ The result is a monolitic file with a minimal size allowing almost full control
 
 
 ## Become a sponsor or a supporter
- * A sponsor is a recurent donator [<img src="https://raw.githubusercontent.com/luc-github/ESP3D/3.0/images/sponsors-supporters/sponsor.PNG" />](https://github.com/sponsors/luc-github)   
- The github sponsors are automaticaly displayed by github, if your tier is `A big hug` or more, to thank you for your support, your logo / avatar will be also added to the readme page with eventually with a link to your site.    
+ * A sponsor is a recurent donator <a href="https://liberapay.com/ESP3D/donate"><img alt="Donate using Liberapay" src="https://liberapay.com/assets/widgets/donate.svg"></a>   
+ The sponsors are automaticaly displayed by github, if your tier is `10 US$/month` or more, to thank you for your support, your logo / avatar will be also added to the readme page with eventually with a link to your site.    
 
- * A supporter is per time donator [<img src="https://www.paypalobjects.com/en_US/i/btn/btn_donateCC_LG_global.gif" border="0" alt="PayPal – The safer, easier way to pay online.">](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=Y8FFE7NA4LJWQ)    
- If your donation is over a per year sponsor tier `A big hug`, to thank you for your support, your logo / avatar will be added to the readme page with eventually with a link to your site    
+ * A supporter is per time donator [<img src="https://www.paypalobjects.com/en_US/i/btn/btn_donateCC_LG_global.gif" border="0" alt="PayPal – The safer, easier way to pay online.">](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=Y8FFE7NA4LJWQ)   
+ If your donation is over `120 US$` per year, to thank you for your support, your logo / avatar will be added to the readme page with eventually with a link to your site.  
 
  Every support is welcome, giving support/ developing new features need time and devices, donations contribute a lot to make things happen, thank you.