Grabbing playbackSpeed set by UI
Replaced playbackSpeed refs
Grabbing playbackSpeed set by UI
Replaced playbackSpeed refs
Merge branch 'playback-speed' of https://github.com/farezv/khan-academy-fxos into playback-speed
className was accidentally omitted

while solving a merge conflict
Replacing playbackSpeed refs in test folder
Merge pull request #53 from farezv/playback-speed

Playback speed works & 'playbackSpeed' refs changed to 'playbackRate'