Safari supports Speech Synthesis
Sets requestAnimationFrame as CR
data update
Merge pull request #483 from stopsatgreen/master

Safari 6.1 & 7 support Speech Synthesis
Merge pull request #484 from jrvidal/master

Sets requestAnimationFrame as CR
Merge pull request #486 from jaydeepw/master

add keywords to apng
data update
WebVTT pulled from Firefox 28
Merge pull request #490 from mpopp75/fx28-webvtt

WebVTT pulled from Firefox 28
data update