Move CI to GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,50 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  phpunit:
+    name: PHPUnit
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        php-version:
+          - "7.1"
+          - "7.2"
+          - "7.3"
+          - "7.4"
+          - "8.0"
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-version }}
+          coverage: xdebug
+
+      - name: Install composer dependencies
+        uses: "ramsey/composer-install@v1"
+
+      - name: Run PHPUnit
+        run: vendor/bin/phpunit
+        if: ${{ matrix.php-version != '8.0' }}
+
+      - name: Run PHPUnit with coverage
+        run: |
+          mkdir -p mkdir -p build/logs
+          vendor/bin/phpunit --coverage-clover build/logs/clover.xml
+        if: ${{ matrix.php-version == '8.0' }}
+
+      - name: Upload coverage report to Coveralls
+        run: vendor/bin/php-coveralls --coverage_clover=build/logs/clover.xml -v
+        env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        if: ${{ matrix.php-version == '8.0' }}

README.md

@@ -4,7 +4,7 @@
 
 A very simple HTML 5 generation library.
 
-[![Build Status](https://secure.travis-ci.org/brick/html.svg?branch=master)](http://travis-ci.org/brick/html)
+[![Build Status](https://github.com/brick/html/workflows/CI/badge.svg)](https://github.com/brick/html/actions)
 [![Coverage Status](https://coveralls.io/repos/github/brick/html/badge.svg?branch=master)](https://coveralls.io/github/brick/html?branch=master)
 [![Latest Stable Version](https://poser.pugx.org/brick/html/v/stable)](https://packagist.org/packages/brick/html)
 [![License](https://img.shields.io/badge/license-MIT-blue.svg)](http://opensource.org/licenses/MIT)