Upgraded to match Rails 5

The bs_icon helper will render a bootstrap glyphicon for you.

  bs_icon 'envelope'

Will render the glyphicon envelope. Saving you the trouble of typing

 <span class="glyphicon glyphicon-envelope"></span>

Will output 12 columns of gridsize 1, with the current media size on top.

This will help you in determing which xs, sm, md, lg media size you're currently at.

tbd