There's an easier way: create a zip file with all your .lua files, and just drag the zip file into the LOVE app (which you can download from the website). This isn't for distribution and more for game testing, but it works perfectly fine.
For distribution on the mac store, yes. But you can make stand alone builds by including a main.lua (and other code) next to the Love executable inside of the application (you can just make a copy of it for your game).