Add IMDB or Playbill.com URL for missing itemLink in data.js

[brittanyrw]

Add itemLink to all objects that are missing it in the data.js file.

You can refer to the link section in the documentation.

For TV shows and movies, add the IMDB page link.

For musicals link the Playbill archive page for the show. Make sure the Playbill link is for the original production. It will say 'original' under the show name on Playbill. Here is an example of the page you should be linking for musicals.

[CamHardy]

Done

[CamHardy]

You closed the issue but rejected my PR? Just assign me the issue as per your readme and I'll re-submit the PR.