This repo contains various Reaper configs, located in the configs directory. They follow the following directory structure:

.
├── README.md
└── configs
    └── config-name
        ├── README.md
        └── REAPER

Any given config can be made active by symlinking its REAPER directory to the appropriate location, depending on your OS. If you'd like, you can use my ReaConfig tool to help you do just that (in addition to all sorts of other tasks related to Reaper config management).