Adding requirements.txt file to support pip venv #18

	# name: black-action
	# on: [pull_request]
	# jobs:
	# linter_name:
	# name: runner / black
	# runs-on: ubuntu-latest
	# steps:
	# - uses: actions/checkout@v2
	# - name: Check files using the black formatter
	# uses: rickstaa/action-black@v1
	# id: action_black
	# with:
	# black_args: "."
	# - name: Create Pull Request
	# if: steps.action_black.outputs.is_formatted == 'true'
	# uses: peter-evans/create-pull-request@v3
	# with:
	# token: ${{ secrets.GITHUB_TOKEN }}
	# title: "Format Python code with psf/black push"
	# commit-message: ":art: Format Python code with psf/black"
	# body: \|
	# There appear to be some python formatting errors in ${{ github.sha }}. This pull request
	# uses the [psf/black](https://github.com/psf/black) formatter to fix these issues.
	# base: ${{ github.head_ref }} # Creates pull request onto pull request or commit branch
	# branch: actions/black

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