More Bootstrap Grid Examples

* More than 12 columns
* Less than 12 columns
* Different column counts and an offeset!
Using the grid system for layout

The main area will take up 8 of 12 available columns.  The sidebar will
take up three and hug the right because of an offset of 1 column.

On a small screen, the navbar wouldn't have enough space, so it stacks
vertically.