chore: update README.md

Author: baliestri

README.md

@@ -9,3 +9,25 @@
 </p>
 
 Plugin for skiping the `php` command when running artisan commands and `./sail` or `./vendor/bin/sail` when running sail commands.
+
+## Installation
+
+```bash
+# Using oh-my-zsh
+git clone https://github.com/baliestri/laravel.plugin.zsh.git $ZSH_CUSTOM/plugins/laravel.plugin.zsh
+# Add laravel to the plugins array in your zshrc file.
+
+# Using zinit
+zinit light baliestri/laravel.plugin.zsh
+
+# Using zi
+zi light baliestri/laravel.plugin.zsh
+```
+
+## Usage
+
+```bash
+cd /path/to/laravel/project # laravel subdirectory
+artisan # instead of php artisan
+sail # instead of ./sail or ./vendor/bin/sail
+```