THE example on the documentation page can't be compiled

The documentation page https://immediate-mode-ui.github.io/Nuklear/ contains ONE prominent example, following directly after the gallery of screenshots.

I could not compile it. There is no command that shows how to compile it, so I reused what I found in the Makefile of the examples folder and adapted it. I just got a lot of error messages. Starting with one prominent (the one) example on the documentation page and not getting a running example is rather discouraging.

I tried other examples from the examples-folder and had to tweak things there also, to get something that runs and makes sense.

Please fix the one example (or replace it with a working one) and add a line that can be used to compile the code.