Add donation information

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: undergroundwires

README.md

@@ -4,6 +4,12 @@
 
 <!-- markdownlint-disable MD033 -->
 <p align="center">
+  <a href="https://undergroundwires.dev/donate?project=privacy.sexy">
+    <img
+      alt="donation badge"
+      src="https://undergroundwires.dev/img/badges/donate/flat.svg"
+    />
+  </a>
   <a href="https://github.com/undergroundwires/privacy.sexy/blob/master/CONTRIBUTING.md">
     <img
       alt="contributions are welcome"
@@ -118,9 +124,13 @@ Online version does not require to run any software on your computer. Offline ve
 - **Extensible**. Effortlessly [extend scripts](./CONTRIBUTING.md#extend-scripts) with a custom designed [templating language](./docs/templating.md).
 - **Portable and simple**. Every script is independently executable without cross-dependencies.
 
-## Contributing
+## Support
+
+**Sponsor 💕**. Consider sponsoring on [GitHub Sponsors](https://github.com/sponsors/undergroundwires), or you can donate using [other ways such as crypto or a coffee](https://undergroundwires.dev/donate).
+
+**Star 🤩**. Feel free to give it a star ⭐ .
 
-Contributions of any type are welcome. See [CONTRIBUTING.md](./CONTRIBUTING.md) as starting point, it includes useful information like [how to add new scripts](./CONTRIBUTING.md#extend-scripts).
+**Contribute 👷**. Contributions of any type are welcome. See [CONTRIBUTING.md](./CONTRIBUTING.md) as the starting point. It includes useful information like [how to add new scripts](./CONTRIBUTING.md#extend-scripts).
 
 ## Development