Add KeepingYouAwake entry to readme.md

[genarod]

KeepingYouAwake Prevents your Mac from going to sleep License is MIT: https://github.com/newmarcel/KeepingYouAwake/blob/main/LICENSE Just to make sure my intent is clear, I recently stated using KeepingYouAwake and as I have found your directory quise useful, I think it should be added