BBC-News/Imager.js — pull request #58 by gunnarbittersmann (2013-12-13 15:34:31+00:00)
Title: Add alt attribute

The alt attribute on img is mandatory in HTML. It is not only important for users of screenreaders, but also for users who cannot see images for other reasons (bad connection, …)
Imager.js shoud set alt attributes on img elements taking the value from corresponding data-alt attributes.

I hope I’ve added the support for alt attributes in the right place and documented its usage properly.