upd: readme

Author: AleksandrRogov

README.md

@@ -10,7 +10,9 @@ Please check [DynamicsWebApi Wiki](../../wiki/) where you will find documentatio
 
 Libraries for browsers can be found in [dist](/dist/) folder.
 
-Any suggestions are welcome!
+If you find this library useful or it saved your time, please feel free to donate to [Paypal](https://paypal.me/alexrogov).
+
+Any suggestions and contributions are welcome!
 
 **Important!** For some reason, npm was not removing `.git` folder from a published package, 
 even though [it should have done it by default](https://docs.npmjs.com/misc/developers#keeping-files-out-of-your-package), therefore