code: function loadImage (file, callback, crossOrigin) {
    if (isPlask) {
      loadImagePlask(file, callback)
    } else {
      loadImageBrowser(file, callback, crossOrigin)
    }
  }
docs: Loads a HTML Image from an url in the borwser, SkCanvas from a file in Plask
  @param {String} file - url addess (Browser) or file path (Plask)
  @param {Function} callback - function(err, image) { }
  @param {Error} callback.err - error if any or null
  @param {Image|SkCanvas} callback.image - loaded image