code: function( array ){
  	var i = array.length, j, swap;
  	while( i ){
  		j = Math.floor( Math.random() * i-- );
  		swap = array[i];
  		array[i] = array[j];
  		array[j] = swap;
  	}
  	return array;
  }
docs: Simple shuffling method based off of http://bost.ocks.org/mike/shuffle/