Merge pull request #1 from jayfresh/master

Using the right points in the animation loop
makes animation easing linear
Adds Web Audio API control, and functions to calculate volume via distance between actor and a sound point
Putting volumeNode in scope
Merge pull request #2 from jayfresh/patch-1

Putting volumeNode in scope
remove debug
adds buffer-loader class for loading multiple sound files, disables volume-mapping
adding comments