Updated .BI TLD definition

See https://github.com/weppos/ianawhois/commit/94faeaaa789717a26610d71ea8fc48390ff09960
Trying to guess the whois.nic.bi response format.

Is the WHOIS interface still under testing?
Update parser for .ru having different entries

Now most of the contact info has gone but there is an url to the contact form.
whois.tznic.or.tz parser must support 'Expired' status.
Fixed whois.rnids.rs parser not to split nameserver name at the hypen
Implement registrar property for CoCCA
Merge pull request #164 from sherwind/rs-nameservers-hyphenated

Fixed whois.rnids.rs parser not to split nameserver name at the hypen
Merge pull request #165 from sherwind/cocca-property-registrar

Implement registrar property for CoCCA
More credits in README
Update CHANGELOG
Indentation
Added .TN TLD server and full whois.ati.tn parser.
Merge branch 'whois.ati.tn'
Add link to CHANGELOG.md file
Extend whois.educause.edu parser.
Parse whois.educause.edu contacts.
Update CHANGELOG
Regenerate gemspec
Coding conventions
whois.co.ug parser fails to support 'Unconfirmed' status.