code: function BinaryLoader(loadItem) {
  		this.AbstractLoader_constructor(loadItem, true, createjs.Types.BINARY);
  		this.on("initialize", this._updateXHR, this);
  	}
docs: constructor 
  A loader for binary files. This is useful for loading web audio, or content that requires an ArrayBuffer.
  @class BinaryLoader
  @param {LoadItem|Object} loadItem
  @extends AbstractLoader
  @constructor