refactor Trainer train/val loop

README.md

@@ -2,16 +2,10 @@
 Package summary goes here, ideally with a diagram
 
 # Install
-Installation instructions
+The `trainlib` package can be installed from PyPI:
 
 ```sh
-pip install <package>
-```
-
-or as a CLI tool
-
-```sh
-uv tool install <package>
+pip install trainlib
 ```
 
 # Development
@@ -20,16 +14,16 @@ uv tool install <package>
 - Depending on needs, install the development dependencies with `uv sync
   --extra dev`.
 
-# Testing
+## Testing
 - To run the unit tests, make sure to first have the test dependencies
   installed with `uv sync --extra test`, then run `make test`.
 - For notebook testing, run `make install-kernel` to make the environment
   available as a Jupyter kernel (to be selected when running notebooks).
 
-# Documentation
+## Documentation
 - Install the documentation dependencies with `uv sync --extra doc`.
 - Run `make docs-build` (optionally preceded by `make docs-clean`), and serve
-  locally with `docs-serve`.
+  locally with `make docs-serve`.
 
 # Development remarks
 - Across `Trainer` / `Estimator` / `Dataset`, I've considered a