note about submodule

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Noel Berry 2021-01-06 00:37:54 -08:00 committed by GitHub
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@ -8,6 +8,7 @@ I intend to add more documentation and clarify some of the code and assets over
### building
- You need C++17 and CMake 3.12+
- Pull Submodule (`git submodule init`, `git submodule update`) (this repo references the [blah](https://github.com/NoelFB/blah) repo)
- Make sure you have SDL2 headers & libraries, and make sure CMake can find them
- All the art was made in [Aseprite](https://www.aseprite.org/). To modify or add new sprites, you'll need to use aseprite.