[CI] Fix missing rugged dependency #53

	name: Continuous Integration
	on:
	push:
	branches: [main]
	pull_request:
	jobs:
	ruby:
	strategy:
	fail-fast: false
	matrix:
	ruby: [2.5, 2.6, 2.7]
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v2
	- name: Setup Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby }}
	- name: Install dependencies
	run: bundle install
	- name: Run rspec
	run: bundle exec rspec
	- name: Run rubocop
	run: bundle exec rubocop --display-cop-names
	- name: Run integration testing
	run: ./test/run.sh
	# This doesn't work on PRs from forks due to GITHUB_TOKEN, which makes
	# it kinda useless for now
	# https://github.com/andrewmcodes/rubocop-linter-action/issues/68
	# rubocop:
	# runs-on: ubuntu-latest
	# steps:
	# - name: Checkout repository
	# uses: actions/checkout@v2
	# - name: Run Rubocop Linter
	# uses: andrewmcodes/[email protected]
	# env:
	# GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	markdown:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v2
	- name: Lint Markdown
	uses: actionshub/[email protected]
	- name: Check links
	uses: gaurav-nelson/github-action-markdown-link-check@v1

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