Horizon OC Compilation Instructions

1. Install devkitpro (https://devkitpro.org/wiki/Getting_Started) with switch-dev
2. Set up a development enviorment for compiling Atmosphere (https://github.com/Atmosphere-NX/Atmosphere/blob/master/docs/building.md)
3. Clone the Horizon OC develop branch (``git clone https://github.com/Horizon-OC/Horizon-OC.git --recurse-submodules``)
4. Run ``./build.sh`` in the root directory
 - If you want to compile with extensions, append ``--ext``
