docs update (missed lp.CONTROLS.* description)

Author: zitros

readme.md

@@ -55,6 +55,8 @@ var setup = { // Object that contain settings. Any setting may be missed.
     },
     lp = new LightPivotTable(setup);
 
+console.log(lp.CONTROLS); // object with functions that can be triggered to control pivot table
+
 lp.setFilter("[DateOfSale].[Actual].[YearSold].&[2009]");
 lp.refresh();
 ```