[esafak]

My READMEs don't have things like "don't run the whole test suite unless I instruct you to because it will take too long; run targeted tests instead".

[viraptor]

Why not? "For most development we recommend running single/specific tests since the whole suite is slow/expensive." sounds like a great thing to put in the readme.

[ecb_penguin]

That seems exactly like something you would want to tell another developer