docs: update README

README.md

@@ -1,48 +1,42 @@
 # Currencies, Monetary Value Objects, Arithmetic and Conversion
 
-![](https://github.com/vst/pypara/workflows/Install%20and%20Test/badge.svg)
+![](https://img.shields.io/pypi/v/pypara?style=flat-square)
+![](https://img.shields.io/pypi/pyversions/pypara?style=flat-square)
+![](https://img.shields.io/github/license/vst/pypara?style=flat-square)
+![](https://img.shields.io/github/actions/workflow/status/vst/pypara/test.yml?style=flat-square)
+![](https://img.shields.io/github/issues/vst/pypara?style=flat-square)
+![](https://img.shields.io/github/last-commit/vst/pypara?style=flat-square)
 
 > **TODO**: Provide a complete README.
 
 ## Development Notes
 
-Create a virtual environment:
+Enter the Nix shell:
 
+```sh
+nix-shell
 ```
-python3.8 -m venv /opt/venvs/pypara3.8
-```
-
-Activate the virtual environment:
-
-```
-source /opt/venvs/pypara3.8/bin/activate
-```
-
-Upgrade base dependencies:
 
-```
-pip install --upgrade pip setuptools
-```
+Run the test suite:
 
-Install production and development dependencies:
-
-```
-pip install -e . -r dev-requirements.txt
+```sh
+tox
 ```
 
-Make sure that [tox](https://tox.readthedocs.io/en/latest/) completes successfully:
+Alternatively:
 
-```
-tox
+```sh
+nix-shell --argstr python python310 --run tox
+nix-shell --argstr python python311 --run tox
 ```
 
 ## Publishing
 
 To build a package and upload to PyPI:
 
-```
-pip install --upgrade twine
-python setup.py sdist bdist_wheel
+```sh
+rm -Rf dist/
+python -m build
 twine check dist/*
 twine upload -s dist/*
-```
+```