bug: fileReader.readAsText(file, encoding), encoding argument lost!

[En777]

promise-file-reader.js:
source code:

function readAsText (file) {
  return readAs(file, 'Text')
}

Syntax:
instanceOfFileReader.readAsText(blob[, encoding]);
your code will makes a bug:
passed encoding param will lost!

reference:
https://developer.mozilla.org/en-US/docs/Web/API/FileReader/readAsText

[jahredhope]

Thanks for reporting.
PRs welcome if you want to fix, otherwise I'll look at it sometime.