Update README.md

Author: jackyarndley

README.md

@@ -12,18 +12,24 @@ A mandelbrot fractal renderer implementing both perturbation and series approxim
 - Multiple save formats including PNG, EXR and KFR.
 - Utilises scaling and mantissa-exponent based extended precision to allow for arbitrary zoom, whilst maintaining good performance. Verified to be working at depths exceeding E50000. Theoretically, this is only limited by MPFR's precision.
 
-## Usage
+## Compiling
 You need to be able to compile the 'rug' crate which requires a rust GNU toolchain. Look in the documentation for rug for more information on how to do this. Once all required dependencies have been installed, build the crate with:
 
 ```cargo build --release```
 
-The created binary can then be used with some of the config files provided. For help with the options do:
+## Usage
+Information on the flags which can be passed to the rendered can be found with the command ```rust-fractal --help```. The renderer takes .toml files as input. There are two seperate files which can be defined to render an image, the options file and the location file. Settings in these files can be changed in order to change the output of the program. By default, there are 3 options files provided, which are:
+
+- ```low.toml```: low quality settings for fast rendering and preview.
+- ```default.toml```: settings that are used by default if no config file is provided.
+- ```high.toml```: higher quality settings for final rendering.
 
-```./target/release/main --help```
+Location files contain information on the specific location to be rendered, including the location, zoom level and rotation. Some examples of these files are stored in the ```./locations``` directory. A typical call to the renderer would then look like:
 
-By default, an image of the set is placed in the ```./output``` folder with it's specific details. A typical call with custom settings would look like:
+- Linux: ```rust-fractal -o default.toml locations/flake.toml```
+- Windows: ```rust-fractal.exe -o default.toml locations/flake.toml```
 
-```./target/release/main -o default.toml locations/flake.toml```
+Output images are placed in the ```./output``` folder.
 
 ## Acknowledgements
 - claude (blog, Kalles Fraktaler 2+)