add github actions

.github/workflows/main.yml

@@ -0,0 +1,153 @@
+name: Check code style and tests
+'on':
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+jobs:
+
+  build_5_6:
+    runs-on: ubuntu-latest
+
+    steps:
+
+      - uses: actions/checkout@v2
+      - uses: php-actions/composer@v6
+        with:
+          php_version: 5.6
+          version: 2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 5.6
+
+      - name: Update packages
+        run: sudo composer update
+
+      - name: PHP version
+        run: php -v
+
+      - name: Run phpcs    
+        run: vendor/bin/phpcs
+
+      - name: Run tests
+        run: vendor/bin/phpunit
+
+  build_7_0:
+    runs-on: ubuntu-latest
+
+    steps:
+
+      - uses: actions/checkout@v2
+      - uses: php-actions/composer@v6
+        with:
+          php_version: 7.0
+          version: 2
+          command: update
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 7.0
+
+      - name: Update packages
+        run: sudo composer update
+
+      - name: PHP version
+        run: php -v
+
+      - name: Run phpcs    
+        run: vendor/bin/phpcs
+
+      - name: Run tests
+        run: vendor/bin/phpunit
+
+  build_7_1:
+    runs-on: ubuntu-latest
+
+    steps:
+
+      - uses: actions/checkout@v2
+      - uses: php-actions/composer@v6
+        with:
+          php_version: 7.1
+          version: 2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 7.1
+
+      - name: Update packages
+        run: sudo composer update
+
+      - name: PHP version
+        run: php -v
+
+      - name: Run phpcs    
+        run: vendor/bin/phpcs
+
+      - name: Run tests
+        run: vendor/bin/phpunit
+
+  build_7_2:
+    runs-on: ubuntu-latest
+
+    steps:
+
+      - uses: actions/checkout@v2
+      - uses: php-actions/composer@v6
+        with:
+          php_version: 7.2
+          version: 2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 7.2
+
+      - name: Update packages
+        run: sudo composer update
+
+      - name: PHP version
+        run: php -v
+
+      - name: Run phpcs    
+        run: vendor/bin/phpcs
+
+      - name: Run tests
+        run: vendor/bin/phpunit
+
+  build_7_3:
+    runs-on: ubuntu-latest
+
+    steps:
+
+      - uses: actions/checkout@v2
+      - uses: php-actions/composer@v6
+        with:
+          php_version: 7.3
+          version: 2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 7.3
+
+      - name: Update packages
+        run: sudo composer update
+
+      - name: PHP version
+        run: php -v
+
+      - name: Run phpcs    
+        run: vendor/bin/phpcs
+
+      - name: Run tests
+        run: vendor/bin/phpunit
+
+
+