enhancer/README.md

1. Clone this repo:
   ```
   git clone https://git.m724.eu/Minecon724/enhancer
   ```
2. Open `main.c` and take a look at the settings, defaults are fine
3. Compile: (you must do this after every change of settings)
   ```
   make
   ```
4. Done, you should see `enhancer` in the main directory

Usage:
```
./enhancer <input> <output>
```

To build a debug binary: (you don't need this unless you do)
```
make debug
```

Ignore warnings from `stb_image`