change readme

README.md

@@ -4,13 +4,34 @@
 Register a new site on https://www.google.com/recaptcha/admin
 
 Include the follow script to your site
-```
+```html
 <script src="https://www.google.com/recaptcha/api.js?hl=pt-BR"></script>
 ```
 
 Include the google div recaptcha inside form tag and the site key in the `data-sitekey attribute
-```
+```html
 <div class="g-recaptcha" data-sitekey="site-key"></div>
 ```
 
+PHP server use:
+```php
+<?php
+
+include 'vendor/autoload.php';
+
+use Wobeto\GoogleRecaptchaCheckbox\Recaptcha;
+
+try {
+    $secret = '4Lchd-IvAAeAAIWBvzYvAEKu1chTimd0HJroP9T4';
+
+    $recaptcha = new Recaptcha($secret);
+
+    $verify = $recaptcha->verify($_POST['g-recaptcha-response']);
+
+    var_dump($verify); //true
+} catch (Exception $e) {
+    echo $e->getMessage();
+}
+```
+
 Enjoy...