Update CONTRIBUTING.md to install .[dev] first then pre-commit (#275)

Author: psobolewskiPhD

CONTRIBUTING.md

@@ -12,12 +12,12 @@ To get started fork this repository, and clone your fork:
 git clone https://github.com/<your_organization>/superqt
 cd superqt
 
-# install pre-commit hooks
-pre-commit install
-
 # install in editable mode
 pip install -e .[dev]
 
+# install pre-commit hooks
+pre-commit install
+
 # run tests & make sure everything is working!
 pytest
 ```