code: function _inc() {
          if (_status() >= 1) {
            return;
          }
  
          var rnd = 0;
  
          // TODO: do this mathmatically instead of through conditions
  
          var stat = _status();
          if (stat >= 0 && stat < 0.25) {
            // Start out between 3 - 6% increments
            rnd = (Math.random() * (5 - 3 + 1) + 3) / 100;
          } else if (stat >= 0.25 && stat < 0.65) {
            // increment between 0 - 3%
            rnd = (Math.random() * 3) / 100;
          } else if (stat >= 0.65 && stat < 0.9) {
            // increment between 0 - 2%
            rnd = (Math.random() * 2) / 100;
          } else if (stat >= 0.9 && stat < 0.99) {
            // finally, increment it .5 %
            rnd = 0.005;
          } else {
            // after 99%, don't increment:
            rnd = 0;
          }
  
          var pct = _status() + rnd;
          _set(pct);
        }
docs: Increments the loading bar by a random amount
  but slows down as it progresses