[optymizer]

I was irked by this as well. I suspect that if GitHub allowed people to copy-paste images directly into README.md we'd see more images in the description of such projects (not sure if they've added such features since the last time I wrote a README.md).

[omn1]

They did actually. You can paste an image into a Markdown file with cmd/ctrl+v.

[gavinray]

Or drag-and-drop an image into a README or any other form of text on the site (PR description, issue comment, etc)