Step 1. Download plugin from the link on the right. Step 2. Drop plugin file into /plugins folder Step 3. Restart / Reload the server
All the data for this plugin is outputted to a file called blocks.yml which is stored in /plugins/worlditerator
If you have any ideas for features you want added or suggestions on how to improve the plugin put it in the comments below.
If you want the source for this plugin just email me and I can send it to you. This was a small plugin and I don't plan on doing much to it so I didn't create a git repository for it.