LFO example
oscilloscope from cwilso
has an initial bpm of 120
gets Signal.connect for use as a control signal
adds ability to set rolloff amount

AudioParams are now Tone.Signals

the wrapping is no longer paper thin
removing base class set method.

it did nothing…
added set method

#27

also fixed dispose method
fixed typo
Tone.PulseOscillator first commit

fixes #25
setPhase method on Oscillator

This method uses not DelayNode so sample accurate start/stop are
maintained.

Fixes #18
added cwilso's oscilloscope
npm install tone

also grunt npm will move relevant files over to the correct folder
Chorus and Phaser are stereo effects

made a few intermediate classes to save on code.
can set phase on LFO
PingPongDelay uses new StereoXFeedbackEffect