First things first: this repository lacks a license because the code is of dubious ethical standing. It was reverse-engineered from a Wayback Machine archive from 2019.
OneView was posted to hacker news in 2017, and is number 5 on the list of top scoring Show HN stories that didn't survive.
I have tried to get in touch with Peter Molyneaux, the creator of OneView, to no avail. If/when he sees this I will do whatever he wants with this repo and the demo site. If he wants it all taken down, fine by me, if he wants it to have a specific license, I'll give it that license, etc. If I don't hear anything from him within a month or two I will assign a permissive license.
This reverse-engineered implementation is made to work as a markwhen view, which means that you can add it on app.markwhen.com via the settings:
If you're running it locally, use http://localhost:5150.