chuanyi/msexcel-builder — pull request #8 by leonardt (2013-11-21 00:38:38+00:00)
Title: updating readme to reflect how workbook.save actually works

As shown on this line https://github.com/chuanyi/msexcel-builder/blob/master/lib/msexcel-builder.js#L822 , if there is an error we callback from `workbook.save` with that error, so we need to invert the check in the callback