Update depends composer

Author: Южаков Георгий

composer.json

@@ -18,7 +18,10 @@
         }
     ],
     "require": {
-        "php": ">=5.3.0"
+        "php": ">=5.3.0",
+        "ext-dom": "*",
+        "ext-curl": "*",
+        "ext-json": "*"
     },
     "require-dev": {
         "symfony/http-foundation": "~2.1",

src/OAuth/Common/Http/Client/CurlClient.php

@@ -118,10 +118,6 @@ public function retrieveResponse(
             curl_setopt($ch, $key, $value);
         }
 
-        if ($this->forceSSL3) {
-            curl_setopt($ch, CURLOPT_SSLVERSION, 3);
-        }
-
         $response     = curl_exec($ch);
         $responseCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);