Merge branch '1.0' into 2.0

src/Shopify/tools/CurlRequest.php

@@ -12,6 +12,7 @@ class CurlRequest
         $ch = curl_init();
         curl_setopt($ch, CURLOPT_URL, $url);
         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+        curl_setopt($ch, CURLOPT_TIMEOUT, 50); // 设置超时限制防止死循环
         curl_setopt($ch, CURLOPT_HEADER, true);
         curl_setopt($ch, CURLOPT_USERAGENT, 'PHPClassic/PHPShopify');
         $headers = [];