Add composer installation to docs/welcome

docs/welcome/installation.md

@@ -27,6 +27,76 @@ Before installing, ensure your site meets these requirements:
 3. Upload the plugin folder to `/wp-content/plugins/`
 4. Activate through the WordPress admin interface
 
+### Composer Installation
+
+This guide explains how to install and integrate the **Secure Custom Fields** plugin in your WordPress theme or plugin using Composer.
+
+Add the following configuration to your `composer.json` file:
+
+```json
+{
+  "repositories": [
+    {
+      "type": "composer",
+      "url": "https://wpackagist.org"
+    }
+  ],
+  "extra": {
+    "installer-paths": {
+      "vendor/{$name}/": ["type:wordpress-plugin"]
+    }
+  },
+  "require": {
+    "wpackagist-plugin/secure-custom-fields": "6.4.1"
+  },
+  "config": {
+    "allow-plugins": {
+      "composer/installers": true
+    }
+  }
+}
+```
+Once the configuration is set, run the following command in your terminal to install the dependencies:
+```shell
+composer install
+```
+or
+```shell
+composer i
+```
+---
+### Add the Composer Autoloader
+To ensure Composer dependencies are loaded correctly, add the following line in your plugin or theme:
+```php
+require_once plugin_dir_path(dirname(__FILE__)) . 'vendor/autoload.php';
+```
+###  Load Secure Custom Fields
+Now you need to manually load the Secure Custom Fields plugin and define its paths. Adjust the paths according to the structure of your plugin or theme:
+```php
+if (! class_exists('ACF')) {
+    // Define the path and URL to the Secure Custom Fields plugin.
+    define('MY_SCF_PATH', plugin_dir_path(dirname(__FILE__)) . 'vendor/secure-custom-fields/');
+    define('MY_SCF_URL', plugin_dir_url(dirname(__FILE__)) . 'vendor/secure-custom-fields/');
+
+    // Include the plugin main file.
+    require_once MY_SCF_PATH . 'secure-custom-fields.php';
+}
+```
+⚠️ **Note:** Replace MY_SCF_PATH and MY_SCF_URL with constants that match your plugin/theme structure if necessary.
+
+### Done!
+You have successfully installed and integrated Secure Custom Fields via Composer. You can now use it as you would with a normal installation, but with all the benefits of Composer-based dependency management.
+
+### Hide SCF Admin Menu and Updates
+
+```php
+// Hide the SCF admin menu item.
+add_filter( 'acf/settings/show_admin', '__return_false' );
+
+// Hide the SCF Updates menu.
+add_filter( 'acf/settings/show_updates', '__return_false', 100 );
+```
+
 ## Verification
 
 After installation: