Add links to other JS projects

Since http://immense.github.io is the page that displays for http://immense.js.org, I believe it makes sense to turn it into a directory listing of our other JS projects.

As of now, our JS projects are:
- [immybox](https://github.com/immense/immybox)
- [knockout-datatable](https://github.com/immense/knockout-datatable)
- [knockout-pickadate](https://github.com/immense/knockout-pickadate)
- [knockout-pickatime](https://github.com/immense/knockout-pickatime)
- [knockout-tinymce](https://github.com/immense/knockout-tinymce)
- [knockout-quill](https://github.com/immense/knockout-quill)
- [quill-drag-and-drop-module](https://github.com/immense/quill-drag-and-drop-module)

We also have the excellent [php-macaroons](https://github.com/immense/php-macaroons) PHP project which I would love to see displayed somewhere (perhaps as a link in the footer?).

Of course, this will involve adding gh-pages to each of our other projects.

Start at the immense.github.io GitHub Pages entry point and review the linked project repositories, including their gh-pages availability. The work is done when the site lists the seven JavaScript projects and provides an appropriate link to php-macaroons, with all referenced links working.

Written by the indexing model from the issue text.