Update README.md #21

	name: linux

	on:
	push:
	branches:
	- '*'
	pull_request:
	branches:
	- '*'

	jobs:
	perl:

	runs-on: ubuntu-latest

	strategy:
	matrix:
	perl-version:
	- '5.20'
	- 'latest'
	- 'threaded'

	container:
	image: perl:${{ matrix.perl-version }}

	steps:
	- uses: actions/checkout@v2
	- name: perl -V
	run: perl -V
	- name: Install Dependencies
	run: curl -sL https://git.io/cpm \| perl - install -g --show-build-log-on-failure
	- name: Run Tests
	run: prove -l t

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