Add basic example

Author: inserve-paul

README.md

@@ -1,2 +1,39 @@
 # Copaco Cloud API
 PHP wrapper for Copaco Cloud API
+
+## Installation
+`composer require inserve/copaco-cloud-api-php`
+
+## Usage example
+
+```php
+<?php
+
+use GuzzleHttp\Client;
+use Inserve\CopacoCloudAPI\CopacoCloudAPIClient;
+
+require 'vendor/autoload.php';
+
+$guzzleClient = new Client([
+    'base_uri' => 'https://api.copaco.cloud',
+]);
+
+$apiClient = new CopacoCloudAPIClient(
+    client: $guzzleClient,
+);
+
+$apiClient->setBearerToken('...');
+
+// Retrieve customers
+$customers = $apiClient->getCustomers([
+    'pageSize' => 30,
+    'customerStatus' => 'Active',
+]);
+
+// Retrieve subscriptions
+$subscriptions = $apiClient->getSubscriptions([
+    'customerId' => '123-456-789',
+    'includePrices' => true,
+]);
+
+```