text: /**
   * Fairly simply, this plug-in will take the data from an API result set
   * and sum it, returning the summed value. The data can come from any data
   * source, including column data, cells or rows.
   *
   *  @name sum()
   *  @summary Sum the values in a data set.
   *  @author [Allan Jardine](http://sprymedia.co.uk)
   *  @requires DataTables 1.10+
   *
   *  @returns {Number} Summed value
   *
   *  @example
   *    // Simply get the sum of a column
   *    var table = $('#example').DataTable();
   *    table.column( 3 ).data().sum();
   *
   *  @example
   *    // Insert the sum of a column into the columns footer, for the visible
   *    // data on each draw
   *    $('#example').DataTable( {
   *      drawCallback: function () {
   *        var api = this.api();
   *        api.table().footer().to$().html(
   *          api.column( 4, {page:'current'} ).data().sum()
   *        );
   *      }
   *    } );
   */
  
  jQuery.fn.dataTable.Api.register( 'sum()', function () {
  	return this.flatten().reduce( function ( a, b ) {
  		return (a*1) + (b*1); // cast values in-case they are strings
  	}, 0 );
  } );
  
  