Add description as alt text in viewer mode

[jonkeane]

This adds the content from the description of the image to the alt tag when in viewer mode.

[ajmeese7]

I agree with this idea so the image has alt text by default, but I think this could be extended further to allow the user to specify alt text as a specific option if they so choose.

[jonkeane]

I agree with this idea so the image has alt text by default, but I think this could be extended further to allow the user to specify alt text as a specific option if they so choose.

I'm happy to try and add this as an option — but want to make sure I get what you're going for: Do you mean add an option like descriptionAsAlt: true to https://github.com/nanostudio-org/nanogallery2/blob/35b4e095988e460a8bc79ce549764c0b98121bb1/src/jquery.nanogallery2.core.js#L1325 and then surface that for configuration too? If it's true, do what's in this patch already, if false, then do nothing for alt text?

[ajmeese7]

@jonkeane I was thinking just have like an altText option that defaults to the description if not otherwise specified, something like the following modification to your code:

var alt_text = this.altText || this.description;