History of Media buffering, seeking, and time ranges

Updated example to uniformly reference myCanvas properties (width and height) instead of using just the width property and hardcoding the height.Web/Apps/Build/Audio_and_video_delivery/buffering_seeking_time_ranges Web/Apps/Fundamentals/Audio_and_video_delivery/buffering_seeking_time_ranges

Updated example to uniformly reference myCanvas properties (width and height) instead of using just the width property and hardcoding the height.

The canvas fillRect and rect commands take (x,y,width,height) parameters instead of (left,top,right,bottom) as the example assumed.

changed ref to jsfiddle to jsbin.Web/Apps/Build/Manipulating_media/buffering_seeking_time_ranges Web/Apps/Build/Audio_and_video_delivery/buffering_seeking_time_ranges

changed ref to jsfiddle to jsbin.

Changed 'audio or audio' to 'audio or video' in a couple of places.

Tweaked my wording in the last sentence for clarity.