EssentialsX version (run /essentials): 2.0.1 build 562

Details:
The Legacy GeoLite dat will be discontinued by April 1, 2018. So it is the time to upgrade EssentialsGeoIP to work with GeoLite2 and MaxMind DB.

The free versions of the GeoLite Legacy databases available at 
http://dev.maxmind.com/geoip/legacy/geolite/ will no longer be updated 
and free downloads of GeoLite Legacy using the geoipupdate program 
will no longer be available starting April 1, 2018.

https://support.maxmind.com/geolite-legacy-discontinuation-notice/

Care to make a PR? <3

#1748 Here you go. @drtshock
If you have any thought or suggestion of this PR, please let me know. I will try to help more.

<3