message: surfaced returnType in docs
  [skip ci]
diff: @@ -150,7 +150,7 @@ define(["Tone/core/Tone"], function (Tone) {
  * [minDecibels,maxDecibels] when the type is "fft".
  * @memberOf Tone.Analyser#
  * @type {String}
  - * @name type
  + * @name returnType
  */
  Object.defineProperty(Tone.Analyser.prototype, "returnType", {
  get : function(){
  