Add a demos folder
Merge pull request #5 from soundsplosion/jy

Add a demos folder
Added a basic noteOn() and noteOff() interface to the default instrument.
Added worker that drives scheduler
Set up gulp based build system, split library into seprate files
Added note scheduling, made instrument polyphonic
Added first timebase demo
Merge pull request #6 from soundsplosion/sp

Worker-based note scheduling and refactoring
Trying to merge with develop.