Add Yandex DNS to default comparison

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Could you please add Yandex DNS instances, basic 77.88.8.8 and 77.88.8.1, safe 
77.88.8.88 and 77.88.8.2, family 77.88.8.7 and 77.88.8.3, as global DNS 
provider? It would be good to check its speeed both in Russia, Turkey and 
worldwide as well. More details are explained on http://dns.yandex.com/ .

Original issue reported on code.google.com by [e-mail] on 22 Jul 2014 at 1:20