IPv6

[robocoder]

https://bugs.php.net/bug.php?id=59124

[yswery]

Bump
THe main reason I dont use HHVM is because the GeoIP extension doesnt have IPv6 support, would be epic if you can make this happen :)

[robocoder]

As you know, the geoip PECL extension doesn't officially support IPv6 yet either, and this extension aims to be API compatible.

[adsr]

This is provided by #26