New folder plugins in ubuntu 11.10:
.gedit-plugin extension should be named .plugin
[Gedit Plugin] header should be [Plugin]
IAge=2 should be IAge=3
All plugins must have a .plugin file along side it.
But this does not help. The plugin does not work in gedit 3.
Check this one out: https://github.com/rtlong/gmate/tree/master/plugins3/zencoding
I'm using it with gedit 3. Only problem I found was Right moves a word right (similarly with Left) instead of moving to the next edit point.
I couldn't figure out why it was doing that, so I switched the next/previous edit point shortcuts.
This one seems to work - https://github.com/mtrovo/zen-coding-gedit3.