Add Infection Support docs

cli-options.md

@@ -43,4 +43,4 @@ This option allows you to only run a specific list of [grouped tests](/docs/grou
 
 ---
 
-Next section: [Laravel Plugin →](/docs/plugins/laravel)
+Next section: [Infection Support →](/docs/infection)

documentation.md

@@ -14,6 +14,7 @@
 	- [Datasets](/docs/datasets)
 	- [Coverage](/docs/coverage)
 	- [CLI Options](/docs/cli-options)
+	- [Infection Support](/docs/infection)
 - ## Plugins
 	- [Laravel](/docs/plugins/laravel)
 	- [Livewire](/docs/plugins/livewire)

infection.md

@@ -0,0 +1,35 @@
+---
+title: Infection Support
+description: Integration between Pest and Infection
+---
+
+# Mutation Testing with Infection
+
+- [Overview](#overview)
+
+<a name="overview"></a>
+## Overview
+
+> [Mutation Testing](https://en.wikipedia.org/wiki/Mutation_testing) is used to design new software tests and evaluate the quality of existing software tests.
+
+[Infection](https://infection.github.io/guide/) is a Mutation Testing library for PHP.
+
+It has out-of-the-box support for Pest, which makes it very easy to start with.
+
+[Install](https://infection.github.io/guide/installation.html) Infection using one of the supported method, for example as a package:
+
+```bash
+composer require infection/infection --dev
+```
+
+and run it
+
+```bash
+vendor/bin/infection --test-framework=pest --show-mutations
+```
+
+> **Note**: Required versions: Pest 1.2.0, Infection 0.23.0
+
+---
+
+Next section: [Laravel Plugin →](/docs/plugins/laravel)