Add overview diagram of the perception and rearrange README file #684

	name: Linter markdown and code

	on:
	pull_request:
	branches:
	- "main"
	push:
	branches:
	- main

	jobs:
	linter:
	name: Linter markdown and code
	runs-on: ubuntu-latest
	steps:
	- name: Check out the repo
	uses: actions/checkout@v2
	# Execute the markdown linter
	- name: Run the markdown linter
	uses: addnab/docker-run-action@v3
	with:
	image: peterdavehello/markdownlint:0.32.2
	options: -v ${{ github.workspace }}:/md
	run: markdownlint .
	# Execute the python linter (executes even if the previous step failed)
	- name: Run the python linter
	uses: addnab/docker-run-action@v3
	with:
	image: alpine/flake8
	options: -v ${{ github.workspace }}:/apps
	run: flake8 .

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