docs instructions for development/contributing

CONTRIBUTING.md

@@ -13,11 +13,13 @@ __I found a bug!__
 
 __I fixed a bug!__
 * First of all, thanks!
+* Make sure that you're running the changed files and/or new files through pre-commit by running `$ pip install pre-commit` and `$ pre-commit install` in the mosartwmpy repo. Pre-commit will now automatically check your file formatting when you `$ git commit`.
 * Open a [new Pull Request] with the fix. Ensure the description clearly outlines the bug and the solution. Include the Issue number if applicable.
 
 __I created a new feature!__
 * You're the best!
 * Consider opening a [new Issue] to describe use cases for the new feature. This will offer a platform for discussion and critique.
+* Make sure that you're running the changed files and/or new files through pre-commit by running `$ pip install pre-commit` and `$ pre-commit install` in the mosartwmpy repo. Pre-commit will now automatically check your file formatting when you `$ git commit`.
 * Then, open a [new Pull Request] with clear documentation of the methodology. Be sure to include new unit tests if appropriate.
 
-The [IM3] team truly appreciates and encourages community involvement. We're all in this together! 
+The [IM3] team truly appreciates and encourages community involvement. We're all in this together!