more

README.md

@@ -172,8 +172,13 @@ our codebase is clean and consistent.
 Install it with `pip install pre-commit`, and install the pre-commit hooks with
 `pre-commit install`.
 
-The same linters run in CI, and you can also run them manually with `pre-commit
-run --all-files`.
+The checks will now run every time you make a commit, and fix files if
+necessary. It's generally a good idea to always run them, but you can also
+bypass them by running `git commit --no-verify`, if necessary.
+
+The CI system also runs the checks on each commit to master, and on each pull
+request. If you want to make sure they pass before opening your PR, you can run
+them locally with `pre-commit run --all-files`.
 
 For more guidelines about contributing, see
 [CONTRIBUTING.md](./CONTRIBUTING.md).