add a screenshot

It’s not very fancy but shows how the thing looks like. And, it’s under 50 kB.

README.md

@@ -4,6 +4,8 @@ This example combines Qt6 GUI (C++) with WGPU rendering (Rust). It doesn’t do
 
 Currently only X11 (XCB) is supported but it should be easy to extend to other platforms.
 
+![Screenshot](screenshot.png)
+
 ## Usage
 
 This program is intended as a starting point rather than a dependency, so just copy it.

init.sh

@@ -56,6 +56,7 @@ git rm -r skel-test
 
 # replace the README with a stub
 echo "# $name" >| README.md
+git rm screenshot.png
 
 # escape HTML special characters (&, <, and >), but also sed special characters (& again, \, and /)
 htmlname=$(echo -n "$name" | sed 's/&/\&amp;/g;  s/</\&lt;/g;  s/>/\&gt;/g;  s:[\\/&]:\\&:g')