$(function(){
  $.fn.digits = function(){ 
    return this.each(function(){ 
      $(this).text( $(this).text().replace(/(\d)(?=(\d\d\d)+(?!\d))/g, "$1,") ); 
    })
  }
  var today = new Date();
  var dateOfBirth = new Date("October 13, 1982");
  var currentAge = today - dateOfBirth;
  var ageInDays = Math.floor(currentAge / (1000 * 60 * 60 * 24));
  $(".age_in_days").append(ageInDays).digits();  

  $(".about article p").lettering('words');
});