Update README

Author: sharkdp

README.md

@@ -7,6 +7,18 @@
 `hexyl` is a hex viewer for the terminal. It uses a colored output to distinguish different categories
 of bytes (NULL bytes, printable ASCII characters, ASCII whitespace characters, other ASCII characters and non-ASCII).
 
+### Sponsors
+
+A special *thank you* goes to our biggest <a href="doc/sponsors.md">sponsor</a>:<br>
+
+<a href="https://www.warp.dev/hexyl">
+  <img src="doc/sponsors/warp-logo.png" width="200" alt="Warp">
+  <br>
+  <strong>Warp, the intelligent terminal</strong>
+  <br>
+  <sub>Available on MacOS, Linux, Windows</sub>
+</a>
+
 ## Preview
 
 ![](https://i.imgur.com/MWO9uSL.png)

doc/sponsors.md

@@ -0,0 +1,14 @@
+## Sponsors
+
+`hexyl` development is sponsored by many individuals and companies. Thank you very much!
+
+Please note, that being sponsored does not affect the individuality of the `hexyl`
+project or affect the maintainers' actions in any way.
+We remain impartial and continue to assess pull requests solely on merit - the
+features added, bugs solved, and effect on the overall complexity of the code.
+No issue will have a different priority based on sponsorship status of the
+reporter.
+
+Contributions from anybody are most welcomed.
+
+If you want to see our biggest sponsors, check the top of [`README.md`](../README.md#sponsors).