code: function chunk(arr, chunkSize) {
        var result = [];
        for (var index = 0, length = arr.length; index < length; index += chunkSize) {
          result.push(arr.slice(index,index + chunkSize));
        }
        return(result);
      }
docs: Breaks the large array into chucks of the specified size.
  @param {Array} arr The array to break into chunks
  @param {Number} chunkSize The size of each chunk.
  @returns {Array} The resulting array containing each chunk