fix: add method to get previous response (#311)

README.md

@@ -222,6 +222,12 @@ format : object|json|array (default:object)
 
 ## Helper Functions
 
+Get Last Response: Get the last response from twitter. For example, you can access the headers to check your rate limit quota.
+```php
+$res = Twitter::getLastResponse();
+var_dump($res['headers']); // ['Rate-Limit' => 'Whatever']
+```
+
 Linkify : Transforms URLs, @usernames, hashtags into links.
 The type of $tweet can be object, array or text.
 By sending an object or an array the method will expand links (t.co) too.

src/Thujohn/Twitter/Twitter.php

@@ -344,6 +344,14 @@ public function delete($name, $parameters = [], $multipart = false, $extension =
         return $this->query($name, 'DELETE', $parameters, $multipart, $extension, $appOnly);
     }
 
+    /**
+     * Get the last response from twitter.
+     */
+    public function getLastResponse()
+    {
+        return $this->response;
+    }
+
     public function linkify($tweet)
     {
         return Utils::linkify($tweet);