this library has bug in ie #2

Hi,

I find bug in ie and i amend as the following:

for your consider
if (navigator.msSaveBlob) { // IE 10+
var blob = new Blob([decodeURIComponent(encodeURI(csv))], {
type: "text/csv;charset=utf-8;"
});
navigator.msSaveBlob(blob, download_link.download);
}else
{
document.body.appendChild(download_link);
download_link.click();
document.body.removeChild(download_link);
}

thx
Dennis