Docs are MS Windows specific

I was hoping that this would be a good gravity simulator, and while I am sure if I could figure out how to use it, it probably would be. The most simple of concepts are not shared: for example - to write a spawn script the instructions say to place a .gravitspawn file into the /spawn directory. Where is that on a Mac? I tried many things, but to no avail. I know the app is free - but it is useless without the ability to create your own simulations. Not sure why this is even out there.

NoCanUse about Gravit