Update readme for clippy and how to get more debug information.

README.md

@@ -1,4 +1,18 @@
-# cosmic-edit
+# COSMIC Edit
 COSMIC Text Editor
 
-This project is a work in progress - issues are expected.
+Currently an incomplete **pre-alpha**, this project is a work in progress - issues are expected.
+
+## Testing
+You can test by installing a current version of Rust and then building with `cargo`.
+
+```SHELL
+git clone https://github.com/pop-os/cosmic-edit
+cd cosmic-edit
+cargo build
+```
+
+You can get more detailed errors by using the `RUST_LOG` environment variables, that you can invoke for just that one command like this: `RUST_LOG=debug cargo run`. This will give you more detail about the application state. You can go even futher with `RUST_LOG=trace cargo run`, that shows all logging details about the applicaiton.
+
+## Clippy Lints
+PRs are welcome, as it builds a better product for everyone. It is recomended that you check your code with Clippy Lints turned on. You can find more about [Configuring Clippy](https://doc.rust-lang.org/nightly/clippy/configuration.html) here.