Update README.md

README.md

@@ -1,4 +1,4 @@
-Maven Helper
+Maven Helper  [![Donate][badge-paypal-img]][badge-paypal]
 ==================
 IntelliJ plugin - https://plugins.jetbrains.com/plugin/7179 
 
@@ -10,3 +10,6 @@ YourKit, LLC is the creator of [YourKit Java Profiler](https://www.yourkit.com/j
 and [YourKit .NET Profiler](https://www.yourkit.com/.net/profiler/),
 innovative and intelligent tools for profiling Java and .NET applications.
 
+
+[badge-paypal-img]:       https://img.shields.io/badge/donate-paypal-green.svg
+[badge-paypal]:           https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=75YN7U7H7D7XU&lc=CZ&item_name=Maven%20Helper%20%2d%20IntelliJ%20plugin%20%2d%20Donation&currency_code=USD&bn=PP%2dDonationsBF%3abtn_donateCC_LG%2egif%3aNonHostedGuest