adding build in github actions #2

	# This workflow uses actions that are not certified by GitHub.
	# They are provided by a third-party and are governed by
	# separate terms of service, privacy policy, and support
	# documentation.
	#
	# See https://github.com/r-lib/actions/tree/master/examples#readme for
	# additional example workflows available for the R community.

	name: R-CMD-check

	on:
	push:
	branches: [ master, fixing-workflow ]
	pull_request:
	branches: [ master ]

	jobs:
	build:
	runs-on: ${{ matrix.config.os }}

	name: ${{ matrix.config.os }} (${{ matrix.config.r-version }})

	strategy:
	fail-fast: false
	matrix:
	config:
	- {os: macos-latest, r-version: 'release'}
	- {os: windows-latest, r-version: 'release'}
	- {os: ubuntu-18.04, r-version: 'devel'}
	- {os: ubuntu-18.04, r-version: 'release'}
	- {os: ubuntu-18.04, r-version: 'oldrel'}

	steps:
	- uses: actions/checkout@v2
	- name: Set up R ${{ matrix.r-version }}
	uses: r-lib/actions/setup-r@v1
	with:
	r-version: ${{ matrix.r-version }}
	- uses: r-lib/actions/setup-pandoc@v1

	- name: Install system dependencies
	if: runner.os == 'Linux'
	env:
	RHUB_PLATFORM: linux-x86_64-ubuntu-gcc
	run: sudo apt-get install -y libcurl4-openssl-dev

	- uses: r-lib/actions/setup-r-dependencies@v1
	with:
	extra-packages: rcmdcheck

	- name: Check
	run: rcmdcheck::rcmdcheck(args = "--no-manual", error_on = "warning", check_dir = "check")
	shell: Rscript {0}

	- name: Upload check results
	if: failure()
	uses: actions/upload-artifact@master
	with:
	name: ${{ runner.os }}-r${{ matrix.config.r-version }}-results
	path: check

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