js API from 2.8?

Hi,

First, I want to congratulate you for your work on this plugin.
I need to use it via AJAX, to avoid sitewide cache invalidation.
As you mention at https://github.com/yellowtree/wp-geoip-detect/wiki/API-Documentation#js-api, js API should be available from v2.8.
Am I right? According to that docs, an “Enable JS API” option should be available on plugin settings, but I can’t see it.
Any light over this?

Thank you very much