Add http://pinacotecabrera.org/ to "in the wild"

[iangilman]

http://pinacotecabrera.org/

Find a good example, like this:

http://pinacotecabrera.org/collezione-online/opere/madonna-col-bambino-madonna-della-mela/

...but with a deeper zoom and add it to:

https://github.com/openseadragon/site-build/blob/master/www/in-the-wild.html

[iangilman]

@1gb Perhaps you could take this?

[iangilman]

Fixed by #147