Added bymeacoffee

Author: lemunozm

README.md

@@ -3,6 +3,7 @@
 [![](https://img.shields.io/crates/l/message-io)](https://www.apache.org/licenses/LICENSE-2.0.txt)
 [![](https://img.shields.io/crates/d/message-io)](https://crates.io/crates/message-io)
 [![](https://img.shields.io/github/workflow/status/lemunozm/message-io/message-io%20ci)](https://github.com/lemunozm/message-io/actions?query=workflow%3A%22message-io+ci%22)
+[![](https://img.shields.io/badge/bymeacoffee-donate-yellow)](https://www.buymeacoffee.com/lemunozm)
 
 
 # message-io
@@ -18,6 +19,8 @@ It also allows you to make an adapter for your own transport protocol following
 If you find a problem using the library or you have an improvement idea,
 do not hesitate to open an issue. **Any contribution is welcome!**
 
+And remember, more [caffeine](https://www.buymeacoffee.com/lemunozm), more productive!
+
 ## Motivation
 Managing sockets is hard because you need to fight with threads, concurrency, full duplex, encoding,
 IO errors that come from the OS (which are really difficult to understand in some situations), etc.