Allow the parent VC to tell if the current data is being filtered or not.

lib/ProMotion/table/table.rb

@@ -38,6 +38,11 @@ module ProMotion
       table_view
     end
 
+    def is_searching?
+      return true if self.class.respond_to?(:get_searchable) && @promotion_table_data.filtered == true
+      false
+    end
+
     def update_table_view_data(data)
       @promotion_table_data.data = data
       table_view.reloadData