Merge remote-tracking branch 'origin/master'

Author: sorinsarca

.gitattributes

@@ -1,5 +1,4 @@
 tests/          export-ignore
 phpunit.xml     export-ignore
 .gitattributes  export-ignore
-.gitignore      export-ignore
-.travis.yml     export-ignore
+.gitignore      export-ignore

.github/workflows/tests.yml

@@ -0,0 +1,43 @@
+name: "Tests"
+on:
+  push:
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: true
+      matrix:
+        php: [7.0, 7.1, 7.2, 7.3, 7.4]
+        stability: [prefer-stable]
+
+    name: PHP ${{ matrix.php }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Cache dependencies
+        uses: actions/cache@v1
+        with:
+          path: ~/.composer/cache/files
+          key: dependencies-php-${{ matrix.php }}-composer-${{ hashFiles('composer.json') }}
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          coverage: none
+
+      - name: Update composer
+        run: composer self-update
+
+      - name: Install dependencies
+        run: composer update --${{ matrix.stability }} --prefer-dist --no-interaction --no-progress
+
+      - name: Execute tests
+        run: vendor/bin/phpunit --verbose

.travis.yml

@@ -1,6 +1,6 @@
 Opis JSON Schema
 ====================
-[![Build Status](https://travis-ci.org/opis/json-schema.png)](https://travis-ci.org/opis/json-schema)
+[![Tests](https://github.com/opis/json-schema/workflows/Tests/badge.svg)](https://github.com/opis/json-schema/actions)
 [![Latest Stable Version](https://poser.pugx.org/opis/json-schema/v/stable.png)](https://packagist.org/packages/opis/json-schema)
 [![Latest Unstable Version](https://poser.pugx.org/opis/json-schema/v/unstable.png)](https://packagist.org/packages/opis/json-schema)
 [![License](https://poser.pugx.org/opis/json-schema/license.png)](https://packagist.org/packages/opis/json-schema)