Show HN: Listify – Turn a group of lines into an HTML list

I'm the author. I've been doing several demo web sites during the last month and one of the things I did a lot is turn paragraphs or something else into lists. I have not found anything to do that with some kind of flexible customization (adding classes and incremental ids, nested elements, etc.)

I know that it's only a few lines of JavaScript but some of my colleagues found it useful, so I have decided to publish here.

All feedback about the code or the grammar (English is not my first language) would be greatly appreciated.