Allow setting base-directory per document basis

[artfabrique]

The ability to specify an absolute or relative export path for each document is a must.
We have many PSDs that represent banners of special offers that are shown inside an app,
One PSD = One offer.
We have around 3 offers a week in total.
Now we already have 120 PSDs which are generating out content.
On the other side, our app is evolving each month and we need to update some UI etc.
So we have a couple other PSDs which generate basic sprites, decorations etc.
We can not set system-wide base-directory in generator.js because we have the same people working with both type of tasks: offers design and app design. That content has to be exported in separate folders because offers content is loaded dynamically and UI is prebuilt.

Please allow specifying absolute paths in the "default" layer.

[kobrix]

I've arrived here looking for the same thing.