Updated docs to include player callback option and deprecated vid
Updated docs to include player callback option and deprecated vid

Addresses #22, player is more of a consistent name with video.js
and `vid` is deprecated. It will continue to exist as to not to
introduce a breaking change at this point.

cvn/vjs-video,LonnyGomes/vjs-video,LonnyGomes/vjs-video,cvn/vjs-video