Updated readme, added workflows

Author: uuf6429

.github/stale.yml

@@ -0,0 +1,11 @@
+daysUntilStale: 30
+daysUntilClose: 7
+exemptLabels:
+  - pinned
+  - security
+staleLabel: wontfix
+markComment: >
+  This issue has been automatically marked as stale because it has not had
+  recent activity. It will be closed if no further activity occurs. Thank you
+  for your contributions.
+closeComment: false

.github/workflows/ci.yml

@@ -0,0 +1,34 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+
+  build:
+    name: Test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php: ['7.4', '8.0']
+
+    steps:
+      - name: Set up PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          coverage: none
+
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Download dependencies
+        uses: ramsey/composer-install@v1
+        with:
+          composer-options: --no-interaction --prefer-dist --optimize-autoloader
+
+      - name: Run tests
+        run: ./vendor/bin/phpunit

README.md

@@ -1,26 +1,18 @@
 # State Engine (PHP)
 
+[![CI](https://github.com/uuf6429/state-engine-php/workflows/CI/badge.svg)](https://github.com/uuf6429/state-engine-php/actions/workflows/ci.yml)
+[![Minimum PHP Version](https://img.shields.io/badge/php-%5E7.4%20%7C%20%5E8-8892BF.svg)](https://php.net/)
+[![License](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/uuf6429/state-engine-php/main/LICENSE)
+[![Packagist](https://img.shields.io/packagist/v/uuf6429/state-engine.svg)](https://packagist.org/packages/uuf6429/state-engine)
+
 This library provides some interfaces and a basic implementation of a State Engine.
 
 **Highlights:**
 - Highly composable - everything can be replaced as desired
-- PSR-14 (Event Dispatcher) compatible
+- [PSR-14](http://www.php-fig.org/psr/psr-14/) (Event Dispatcher) compatible
 - Fluent interface
 - Generates PlantUML markup
 
-## Table Of Contents
-
-- [State Engine (PHP)](#state-engine-php)
-  - [Table Of Contents](#table-of-contents)
-  - [Installation](#installation)
-  - [Why?](#why)
-  - [How?](#how)
-  - [Usage](#usage)
-    - [From Scratch](#from-scratch)
-    - [From Scratch (Custom)](#from-scratch-custom)
-    - [Existing Code](#existing-code)
-  - [Examples & Testing](#examples--testing)
-
 ## Installation
 
 The recommended and easiest way to install this library is through [Composer](https://getcomposer.org/):
@@ -60,7 +52,7 @@ Usage depends on if you want to do it from scratch or plug it into your existing
 
 Here's a quick & dirty example with the provided implementation (that assumes that there is a "door" model):
 
-```injectablephp
+```php
 use App\Models\Door;  // example model
 
 use uuf6429\StateEngine\Implementation\Builder;
@@ -101,7 +93,7 @@ For example, you could store states or transitions in a database, in which case
 The library provides some flexibility so that you can connect your existing code with it. In more complicated scenarios,
 you may have to build a small layer to bridge the gap. The example below illustrates how one can handle models with
 flags instead of a single state.
-```injectablephp
+```php
 use App\Models\Door;  // example model
 
 use uuf6429\StateEngine\Implementation\Builder;