web-animations/web-animations-js — pull request #611 by rictic (2014-06-23 22:39:58+00:00)
Title: Typos in README; fill is forwards and backwards

... not 'forward' and 'backward'. This had me puzzled for like an hour.

cite from the spec [section 3.7.1 Fill Modes](http://dev.w3.org/fxtf/web-animations/#fill-modes)