docs (README.md): added badges #34

	name: tests

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.7", "3.8", "3.9"]

	steps:
	- uses: actions/checkout@v2
	- name: Install gdtk
	run: \|
	mkdir gdtk
	cd gdtk/
	git init
	git remote add -f origin https://github.com/gdtk-uq/gdtk.git
	git config core.sparseCheckout true
	echo "src/lib/" >> .git/info/sparse-checkout
	git pull origin master
	cd src/lib
	python3 -m pip install .
	cd ../../../
	- name: Install package
	run: \|
	python -m pip install --upgrade pip
	pip install pytest
	pip install ./
	- name: Test with pytest
	run: \|
	pytest tests

Provide feedback