Web interface demo link is not working

[Sachin Araballi]

By Laurens, here, which takes data in different format and can also use Google Spreadsheet input.

here is linking is giving 404 error.

[Greg Sadetsky]

I found an updated version at https://lvdmaaten.github.io/tsnejs/ , but it seems like the underlying google-sheets-fetching service is down (see https://github.com/jsoma/tabletop#but-wait-dont-use-tabletop )

probably best to remove the link from the readme?