Updating README

README.md

 # GITLAB-CI EXAMPLE: MONO
 
 [![pipeline status](https://gitlab.com/tobiaskoch/gitlab-ci-example-mono/badges/master/pipeline.svg)](https://gitlab.com/tobiaskoch/gitlab-ci-example-mono/commits/master)
+[![maintained: yes](https://tobiaskoch.gitlab.io/badges/maintained-yes.svg)](https://gitlab.com/tobiaskoch/gitlab-ci-example-mono/commits/master)
+[![donate: paypal](https://tobiaskoch.gitlab.io/badges/donate-paypal.svg)](https://www.tk-software.de/donate)
 
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@@ -14,5 +16,8 @@ see [CONTRIBUTING.md](https://gitlab.com/tobiaskoch/gitlab-ci-example-mono/blob/
 ## Contributors
 see [AUTHORS.txt](https://gitlab.com/tobiaskoch/gitlab-ci-example-mono/blob/master/AUTHORS.txt)
 
+## Donating
+Thanks for your interest in this project. You can show your appreciation and support further development by [donating](https://www.tk-software.de/donate).
+
 ## License
 **gitlab-ci-example-mono** © 2018  Tobias Koch. Released under the [MIT License](https://gitlab.com/tobiaskoch/gitlab-ci-example-mono/blob/master/LICENSE.md).
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