add license?

[Robert42]

Thanks for sharing your experiment. Have you considered adding a license?

[Robert42]

Ok, my project is completed: https://github.com/Robert42/cairo_xcb_alpha_tutorial
A tutorial on how to create transparent windows using xcb and cairo.

If you would add a license to this reprository, that would allow me to remove the awkward copyright note at the beginning of my tutorial. If not,that's fine, too. I would simply leave it as it is.

Btw: According to my experiments, the cairo_push_group and cairo_pop_group_to_source are not necessary if you instead clear the cairo surface directly:
https://github.com/Robert42/cairo_xcb_alpha_tutorial#clear-buffer