Fix path to README.md to be used as mainpage for Doxygen docs. Update… #15

	# Copyright (c) 2014-2022 Kartik Kumar (me@kartikkumar.com)
	# Distributed under the MIT License.
	# See accompanying file LICENSE or copy at http://opensource.org/licenses/MIT

	# This workflow is based off of the GitHub Actions documentation:
	# - https://docs.github.com/en/actions

	name: run-all-tests
	on: [push]
	jobs:
	run-tests:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2.4.2
	- name: Setup CMake
	uses: jwlawson/actions-setup-cmake@v1.12
	with:
	cmake-version: '3.23.x'
	- name: Build CMake project
	run: \|
	cmake -S . -B build -DBUILD_TESTING=on
	cmake --build build
	- name: Run tests
	run: make -C build test

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