facebook/react — pull request #1276 by marcins (2014-03-20 04:14:36+00:00)
Title: Fix transition end detection for Android

Some Android versions have the "transition" and "animation" properties
set on element style objects despite not supporting un-prefxied animations
and transitions. This change adds an additional sanity check to make sure
the correct event handlers are added for transition groups.

Fixes #1275