docs: revise install hack: we can use kedro develop

README.md

@@ -6,17 +6,13 @@ We are just starting out. See [the design document](./doc/design.md) for plans.
 
 ## Contributing
 
-**NOTE**: install hack for the moment until kedro version 0.18 which
-supports python 3.9.
+**NOTE**: Until their 0.18.0 release, we will be using the development version of kedro.
 
 ```shell
 git clone git@github.com:FactFiber/kedro-dvc.git
 cd kedro-dvc
-poetry run pre-commit install && poetry run pre-commit install ----hook-type commit-msg
-poetry env use python3.9
 poetry install
-poetry shell
-pip install kedro
+poetry run pre-commit install && poetry run pre-commit install ----hook-type commit-msg
 ...
 poetry run pytest
 ```