Responsive grid documentation for ionic 2


Is there comprehensive documentation for making an ionic 2 grid responsive
in terms of different rendering based on different screen sizes?

Looking at the stackoverflow post,
there is the ability to add “responsive-” attributes to an ion-row.
What do we refer to in order to implement these attributes properly?
If they are not documented, does that mean they are going to be dropped?

There is a snippet about responsive grid in this section on theming,
but it is not exactly clear what is going, as compared to say the docs
for grid systems in bootstrap.css.