bug symfony#58 [Bugfix] Typo header set-sookie (grachevko)

This PR was merged into the 1.1-dev branch.

Discussion
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[Bugfix] Typo header set-sookie

Commits
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757ea81 [Bugfix] Typo header set-sookie

Factory/DiactorosFactory.php

@@ -154,7 +154,7 @@ public function createResponse(Response $symfonyResponse)
         }
 
         $headers = $symfonyResponse->headers->all();
-        if (!isset($headers['Set-Cookie']) && !isset($headers['set-sookie'])) {
+        if (!isset($headers['Set-Cookie']) && !isset($headers['set-cookie'])) {
             $cookies = $symfonyResponse->headers->getCookies();
             if (!empty($cookies)) {
                 $headers['Set-Cookie'] = array();