message: updating doc diagram
diff: -// import Tone from "../core/Tone";
  -// import "../source/Source";
  -// import "../source/Oscillator";
  -// import "../signal/Signal";
  -// import "../signal/WaveShaper";
  -// import "../core/Gain";
  import { readOnly } from "Tone/core/util/Interface";
  import { WaveShaper } from "Tone/signal/WaveShaper";
  import { Gain } from "../../core/context/Gain";
  @@ -25,11 +19,29 @@ interface PulseOscillatorOptions extends ToneOscillatorOptions {
  * a square wave.
  * [Read more](https://wigglewave.wordpress.com/2014/08/16/pulse-waveforms-and-harmonics/).
  * <pre>
  - * width = 0.25 width = 0.5 width = 0.75
  - * +---+ + +------+ + +---------+ +
  - * | | | | | | | | |
  - * | | | | | | | | |
  - * + +---------+ + +------+ + +---+
  + * width = -0.25 width = 0.0 width = 0.25
  + *
  + * +-----+ +-------+ + +-------+ +-+
  + * | | | | | | |
  + * | | | | | | |
  + * +-+ +-------+ + +-------+ +-----+
  + *
  + *
  + * width = -0.5 width = 0.5
  + *
  + * +---+ +-------+ +---+
  + * | | | |
  + * | | | |
  + * +---+ +-------+ +---+
  + *
  + *
  + * width = -0.75 width = 0.75
  + *
  + * +-+ +-------+ +-----+
  + * | | | |
  + * | | | |
  + * +-----+ +-------+ +-+
  + *
  * </pre>
  * @param frequency The frequency of the oscillator
  * @param width The width of the pulse
  