added documentation command to README.md

- We were running into the issue where if you just run cargo doc --open it would generate just a black html page despite all of our /// comments
- We're not sure what is going wrong here but we found a source talking about the visabilty needing to be public but everything we have is public?
- we found a work around here rust-lang/cargo#1865 from Bart Massey himself

README.md

@@ -42,6 +42,11 @@ To build or run an optimized version, use `cargo --release`.
 
 Run `cargo test` to do some simple testing. Though it should be noted that the main form of testing for this project is human visual, i.e does the image generate in the way we expect visually. 
 
+## Documentation
+To read each files inner documentation about functionality and purpose run the follow:
+
+    cargo rustdoc --open -- --document-private-items
+
 ## Fractal Generation Examples
 ![Barnsley](https://i.imgur.com/KPU4MaJ.png)
 ![Julia](https://i.imgur.com/TzwaN9f.png)