add exception for unsupported librdkafka version

Author: nick-zh

RdKafkaConnectionFactory.php

@@ -39,6 +39,10 @@ class RdKafkaConnectionFactory implements ConnectionFactory
      */
     public function __construct($config = 'kafka:')
     {
+        if (version_compare(RdKafkaContext::getLibrdKafkaVersion(), '1.0.0', '<')) {
+            throw new \RuntimeException('You must install librdkafka:1.0.0 or higher');
+        }
+
         if (empty($config) || 'kafka:' === $config) {
             $config = [];
         } elseif (is_string($config)) {