Here is a small guide for how to make Atom cooperate with SFML.
I am writing this because while I could find very limited information on making the combination work, it was never for a Mac environment. And so after some experimenting I found a solution that seems to work.
First off, Atom is just a text editor. It never claims to be more. But the beauty of Atom is in the range of plugins available, making it easy to build it into an IDE if you wish. Introducing: