usablica/intro.js — pull request #105 by ilovekhym (2013-04-24 10:31:59+00:00)
Title: support `attrid` data attribute 

Instead of per targetElem scope calling:

> introJs('#element').start();

new optional attrid is added to enable alternative grouping method:

>
> introJs().start('registerModalDialog');

This is added to avoid the overlay bug that does not accurately highlight the targetElem when the introJs is called for specific element.