I used the instructions in README.md to install the dependencies (I'm using brew) and add the src folder.
When I build, I get the following error:
Undefined symbols for architecture x86_64:
"_SDL_main", referenced from:
-[SDLMain applicationDidFinishLaunching:] in SDLMain.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)