Add pre-commit hook (#55)

.pre-commit-config.yaml

@@ -0,0 +1,5 @@
+repos:
+  - repo: https://github.com/charliermarsh/ruff
+    rev: v0.0.23
+    hooks:
+      - id: lint

.pre-commit-hooks.yaml

@@ -0,0 +1,7 @@
+- id: lint
+  name: ruff lint
+  description: Run ruff to lint Python files.
+  entry: ruff
+  language: python
+  types_or: [python]
+  pass_filenames: true

README.md

@@ -51,6 +51,16 @@ You can run ruff in `--watch` mode to automatically re-run on-change:
 ruff path/to/code/ --watch
 ```
 
+ruff also works with [Pre-Commit](https://pre-commit.com) (requires Cargo on system):
+
+```yaml
+repos:
+- repo: https://github.com/charliermarsh/ruff
+  rev: v0.0.23
+  hooks:
+    - id: lint
+```
+
 ## Configuration
 
 ruff is configurable both via `pyproject.toml` and the command line.