/**
 * countdown timer with some configuration
 *
 * @version 0.1
 * @url https://jsfiddle.net/KzrwQ/1/
 * @date 2011/09/02
 * @author Conrad 'bartrail' Barthelmes
 * @licence MIT
 *
 * usage:
 *
 * $('selector').countTo({
 *   interval:    1000,                             // miliseconds the interval is repeated (aka speed)
 *   startNumber: 10,                               // start from 10 or any other integer
 *   endNumber:   0,                                // end at 0 or any other integer
 *   
 *   onLoop:      function(self, current, loop) {   // fired on every loop
 *     self;      // the fetched element
 *     current;   // current number of interval
 *     loop;      // finished loops
 *
 *     // default behaviour:
 *     $(self).text(current);
 *   },
 *   
 *   onStart:     function(self) {                  // fired on the beginning
 *     self;      // the fetched element
 *   },
 *
 *   onFinish:    function(self, current, loop) {   // fired when finished
 *     self;      // the fetched element
 *     current;   // current number of interval
 *     loop;      // finished loops
 *   }
 * });
 * 
 */