Basically what you want is generate a stream item in Easysocial user dashboard when someone publish a new document from the Docman right?

If that is the case, you can pass them this following information, it might help them to create their own plugin and Easysocial app integration very well with Docman.

1. Download this plugins from https://stackideas.com/apps/item/8-articles
>> You can look at this method 'onContentAfterSave', when someone create an article on the site, it will go through this function and create a new stream item in Easysocial.

2. I have attached article app for Easysocial, you can pass to them this zip file.
>> You can look at this method 'onPrepareStream', this is how we render the article stream item in Easysocial.

Hope this will help.