add show/hide capability for columns

src/app/pages/smart-table

Hey guys,

I would like to create checkboxes over the table. When I click on a checkbox, I would like to hide the corresponding column to make the UX cooler and the table more readable.

Tried this one 
https://github.com/akveo/ng2-smart-table/pull/688/commits/8d22cae0d991b40480487b165e4b7d360088ec1e

But it is not working

Do somebody knows how to do ?