Add graphics instruction for drawing a batch of points #4

	# Run the Maven 'test' phase whenever a pull request is opened
	# See https://docs.github.com/en/actions/use-cases-and-examples/building-and-testing/building-and-testing-java-with-maven

	name: Run Maven tests

	on:
	pull_request:
	branches: [ "master" ]
	# Allows you to manually run the workflow (for testing)
	workflow_dispatch:

	jobs:
	build:
	name: Build and run tests
	runs-on: ubuntu-latest
	permissions:
	# allows this workflow to create check runs (their passing/failure is shown on the PR)
	checks: write
	contents: read
	steps:
	- uses: actions/checkout@v3
	- name: Set up JDK 8
	uses: actions/setup-java@v3
	with:
	java-version: '8'
	distribution: 'temurin'
	cache: maven
	- name: Run test phase
	run: mvn test --batch-mode

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