Add ntt.net record to example/jwhois.conf. Issue #3.

[mykola-kyryk]

trafficstars

[robert-scheck]

After spending quite a nice amount of time with this issue, I figured out this:

$ host rwhois.verio.net
Host rwhois.verio.net not found: 3(NXDOMAIN)
$ 

And Wikipedia says "In early 2000 Verio was sold to NTT" at https://en.wikipedia.org/wiki/Verio thus the WHOIS server needs to be changed from rwhois.verio.net to rwhois.gin.ntt.net simply. The rwhois.gin.ntt.net returns the right results for Verio objects. Patch suggested as part of pull request #17.