code: function(d) {
  		"use strict";
  
  		if (typeof d === "number") {
  			d = new Date(d);
  		}
  		return new Date(d.getFullYear(), d.getMonth()+1, 0);
  	}
docs: Get the last day of the month
  @param  Date|int	d	Date or timestamp in milliseconds
  @return Date			Last day of the month