Created by: dominicbarnes
I am adding this feature because I felt like the width: 100% on .table was out of place since it's labeled as "unstyled". I feel that kind of style change is best left to an abstracted class.
As such, I added .table-expanded which instead adds the 100% width to the table, rather than requiring it along with .table. Possibly a controversial change, but I figured I would take a chance by submitting this pull request.
I've updated the documentation to reflect this change as well.