Added donation in contributing section

README.md

@@ -602,6 +602,7 @@ class QuarkusTestTest {
 There are plenty of ways to contribute to this project:
 
 * Give it a star
+* Make a donation through [GitHub](https://github.com/sponsors/Hakky54) or [open collective](https://opencollective.com/hakky54)
 * Share it with a [![Tweet](https://img.shields.io/twitter/url/http/shields.io.svg?style=social)](https://twitter.com/intent/tweet?text=With%20LogCaptor%20it%20is%20now%20very%20easy%20to%20captor%20and%20test%20your%20log%20message&url=https://github.com/Hakky54/log-captor/&via=hakky541&hashtags=logging,testing,log4j,slf4j,log4j2,jul,lombok,developer,java,scala,kotlin,logcaptor)
 * Join the [Gitter room](https://gitter.im/hakky54/logcaptor) and leave a feedback or help with answering users questions
 * Submit a PR