Mix of existent and nonexistent files in README instructions is confusing

[ngirard]

README.md contains

• Create a ./agents.txt file with each agent name on a new line.

todo-sh
hackernews

which I found confusing, because todo-sh exists within the repo, but hackernews doesn't.

Cheers, and thanks so much for your work !

[sigoden]

This is not a problem. Users should be careful when copying and pasting.

I was going to add Hacker News, I just haven't gotten around to it yet.