Export 3 resolutions at once, same filenames, separate subfolders

My current workflow is to export iPad-retina assets, move the PNG files into the appropriate folder, scale the PSD 50%, export PNGs, move them into a separate folder, scale by 50%, export PNGs and move them too. Automating this process would be a huge time saver, as well as remove a lot of possibility for human error.

Thanks for the amazing plugin!!