Using the filter tab in AdvancedSearch, export all your plugin tiddlers as json. A proper plugin will contain all your tiddlers under your namespace, i.e
$:/plugins/bobj/plugin1/tiddler1
$:/plugins/bobj/plugin1/tiddler2
The filter to get all your plugin tiddlers might look like:
[prefix[$:/plugins/bobj/plugin1]]
Have your users import the exported json file. They can even import over the network (in Windows at least) if you host the json file online (Github works.)
(editied to add plugin for namespace)