Limit caching to GET requests only

Author: phpdreams

lib/Github/HttpClient/CachedHttpClient.php

@@ -68,7 +68,9 @@ public function request($path, $body = null, $httpMethod = 'GET', array $headers
             return $cacheResponse;
         }
 
-        $this->getCache()->set($this->id, $response);
+        if ($httpMethod == 'GET') {
+            $this->getCache()->set($this->id, $response);
+        }
 
         return $response;
     }