MacOS setup

1. Install xcode command-line tool xcode-select --install
2. Install homebrew https://brew.sh/
3. Install SDL2 brew install sdl2
4. clone this repo git clone https://github.com/bobbydigitales/arcem_sdl.git
5. cd arcem_sdl
6. build SYSTEM=sdl make -j all
7. run ./arcem
8. At this point it should run and fail because you don't have an OS ROM file.