Fix small things in readme

Author: uuf6429

.github/workflows/ci.yml

@@ -13,22 +13,29 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php: ['7.4', '8.0']
+        php: [ '7.4', '8.0' ]
 
     steps:
       - name: Set up PHP
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
-          coverage: none
+          coverage: xdebug2
 
       - name: Checkout code
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 2
 
       - name: Download dependencies
         uses: ramsey/composer-install@v1
         with:
           composer-options: --no-interaction --prefer-dist --optimize-autoloader
 
       - name: Run tests
-        run: ./vendor/bin/phpunit
+        run: ./vendor/bin/phpunit --coverage-clover coverage.xml
+
+      - name: Upload to Codecov
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+        run: bash <(curl -s https://codecov.io/bash)

README.md

@@ -1,10 +1,11 @@
 # State Engine / Machine (PHP)
 
 [![CI](https://github.com/uuf6429/state-engine-php/actions/workflows/ci.yml/badge.svg)](https://github.com/uuf6429/state-engine-php/actions/workflows/ci.yml)
+[![codecov](https://codecov.io/gh/uuf6429/state-engine-php/branch/main/graph/badge.svg)](https://codecov.io/gh/uuf6429/state-engine-php)
 [![Minimum PHP Version](https://img.shields.io/badge/php-%5E7.4%20%7C%20%5E8-8892BF.svg)](https://php.net/)
-[![License](http://poser.pugx.org/uuf6429/state-engine/license)](https://packagist.org/packages/uuf6429/state-engine)
-[![Latest Stable Version](http://poser.pugx.org/uuf6429/state-engine/v)](https://packagist.org/packages/uuf6429/state-engine)
-[![Latest Unstable Version](http://poser.pugx.org/uuf6429/state-engine/v/unstable)](https://packagist.org/packages/uuf6429/state-engine)
+[![License](https://poser.pugx.org/uuf6429/state-engine/license)](https://packagist.org/packages/uuf6429/state-engine)
+[![Latest Stable Version](https://poser.pugx.org/uuf6429/state-engine/version)](https://packagist.org/packages/uuf6429/state-engine)
+[![Latest Unstable Version](https://poser.pugx.org/uuf6429/state-engine/v/unstable)](https://packagist.org/packages/uuf6429/state-engine)
 
 This library provides some interfaces and a basic implementation of a State Engine or State Machine.