Okay, I decided to try SFML on my Dad's computer, since he does have Xcode 5. But when I used the install.sh file, I got a long list of "Permission denied" statements. So I tried copying all the files manually, but some of the directories mentioned in the tutorial didn't exist on my dad's computer (or on my computer either, for that matter).
/usr/local/include
wasn't there. And the closest thing I could find to this:
/Library/Developer/Xcode/Templates
was this:
Library/Application Support/Apple/Developer Tools/Project Templates
So I put the templates in there, but "sfml" still didn't come up in the new project window in Xcode.
If someone could explain what I'm doing wrong, I'd really appreciate it!