message: fixed example to new UserMedia API
  [skip ci]
diff: @@ -13,7 +13,7 @@ define(["Tone/core/Tone", "Tone/component/Analyser"], function(Tone){
  * @param {Number} smoothing The amount of smoothing applied between frames.
  * @example
  * var meter = new Tone.Meter();
  - * var mic = new Tone.UserMedia().start();
  + * var mic = new Tone.UserMedia().open();
  * //connect mic to the meter
  * mic.connect(meter);
  * //the current level of the mic input
  