fixed namespace

src/Curl/CurlClient.php

@@ -6,7 +6,7 @@ use WPDesk\HttpClient\HttpClient;
 use WPDesk\HttpClient\HttpClientResponse;
 use WPDesk\HttpClient\HttpClientRequestException;
 
-class CurlClient implements \WPDesk\HttpClient\HttpClient {
+class CurlClient implements HttpClient {
 	/** @var resource */
 	private $curlResource;
 	/** @var  string|null|boolean */