var Piecon = require('piecon');

var count = 0;
Piecon.setOptions({fallback: 'force'});
var i = setInterval(function(){
  if (++count > 100) {
    // clears the icon
    Piecon.reset();
    clearInterval(i);
    return false;
  }

  // this is what sets the actual progress count
  Piecon.setProgress(count);
}, 250);

'check out the favicon' // =>

Piecon.setOptions({
  color: '#ff0084', // Pie chart color
  background: '#bbb', // Empty pie chart color
  shadow: '#fff', // Outer ring color
  fallback: false // Toggles displaying percentage in the title bar (possible values - true, false, 'force')
});