usablica/intro.js — pull request #223 by puneetkay (2013-11-19 13:53:12+00:00)
Title: Calling exit() when intro is already completed or skipped

I faced same issue as https://github.com/usablica/intro.js/issues/178 when I tried to create multiple instance of Intro.

Now its verifying if overlayLayer isn't null before fade-out animation. Thats it.

Cheers!