Suggestion: Add date parsing when reading Excel file

[rbenavides00]

I've searched for a while a way to parse dates using this module but couldn't find a quick and efficient one. I suggest adding date parsing as an option parameter (such as { cellDates: true }).

For example, this code:
var parser = new (require('simple-excel-to-json').XlsParser)();
var doc = parser.parseXls2Json('./example/sample.xlsx', { cellDates: true });

...should return a JSON object including dates as a JavaScript date format instead of numbers.