Update CONTRIBUTING.md and README.md

CONTRIBUTING.md

@@ -47,29 +47,28 @@ You will need some knowledge of git, github, and Python/Django development. Usin
 
 ### Local installation
 
-This section assumes you know about local Python versions and virtual environments.
+This package uses [uv](https://github.com/astral-sh/uv) and [just](https://github.com/casey/just).
 
-To clone the repository and install the requirements for local development:
+After installing both, check out this repository and type `just bootstrap` to bootstrap a development environment.
 
 ```console
 git clone git://github.com/zostera/django-bootstrap5.git
 cd django-bootstrap5
-pip install -U pip -r requirements-dev.txt
-pip install -e .
+just bootstrap
 ```
 
 ### Running the tests
 
 To run the tests:
 
 ```console
-make test
+just test
 ```
 
 To run the tests on all supported Python/Django combinations:
 
 ```console
-make tests
+just tests
 ```
 
 ## Pull Request Guidelines

README.md

@@ -20,6 +20,8 @@ This package requires a combination of Python and Django that is currently suppo
 
 See "Supported Versions" on https://www.djangoproject.com/download/.
 
+This package uses [uv](https://github.com/astral-sh/uv) and [just](https://github.com/casey/just) for local development.
+
 ## Documentation
 
 The full documentation is at https://django-bootstrap5.readthedocs.io/
@@ -64,7 +66,7 @@ The full documentation is at https://django-bootstrap5.readthedocs.io/
 An example app is provided in the folder `example`. You can run the example app with this command:
 
 ```console
-make example
+just example
 ```
 
 ## Bugs and suggestions