Add Inky Star Map project to README

Author: helgibbons

README.md

@@ -204,3 +204,4 @@ Links to community projects and other resources that you might find helpful can
 - [I built an E-Ink Calendar with a Raspberry Pi](https://www.youtube.com/watch?v=58QWxoFvtJY)
 - [Spectra-Qualified Uncomplicated Inky Rendering Tools](https://github.com/fitoori/squirt) - one-shot Python scripts to display web content
 - [phpSimpleInkyImageServer](https://github.com/Indiana8000/phpSimpleInkyImageServer) - a simple python + php script to supply Inky with images
+- [Inky Star Map](https://github.com/Marcel-Jan/inkystarmap) - displays a map of the night sky generated with [starplot](https://starplot.dev/)