custom controls on mobile

add tap function to show and hide controls * disable native controls.
need to add .vjs-poster, .vjs-loading-spinner, .vjs-big-play-button, .vjs-text-track-display{
	pointer-events: none !important;
} to css.

to do: 
*detect if browser supports fullscreen if not use native controls.
* hide native controls on browsers that do not support full screen
http://css-tricks.com/custom-controls-in-html5-video-full-screen/
Merge pull request #66 from da1nonly/patch-1

custom controls on mobile