Hi I have found a plugin that works.
Here are some instructions:
1. Download CleanRoomGenerator
http://dev.bukkit.org/bukkit-plugins/cleanroomgenerator/
In game type in
/mvcreate Skyblock normal -g CleanroomGenerator:.
2. Download http://dev.bukkit.org/bukkit-plugins/skybukkit/
Run the server
Goto plugins\SkyBukkit
Edit config.yml
"world: world" set to "world: SkyBlock"
4. Setup a Permissions for people skyblocks.
Reccomended: ButtonPromote
http://dev.bukkit.org/bukkit-plugins/buttonpromote/
When a button is Pushed it runs specific commands.
Requirements:
WorldGuard, WorldEdit, Multiverse