Fix bug! declaration (#110)
Fix bug! declaration (#110)

Some parsers raise `undefined method `bug!' for Whois::Parser:Class`.
This adds the class method while keeping the instance method for
backwards compatibility.

Signed-off-by: David Calavera <b9b0c8e7f90ecf337f6797c4d2e0f1dd0dbc0324@gmail.com>

weppos/whois-parser