HW4 Step 0:
The very first step towards a responsive design is
the inclusion of the viewport tag and
the bootstrap-responsive css file (in the <head>).
In this case, bootstrap-responsive is included in
bootstrap-combined-no-icons.min.css
Then, within the body, we use row-fluid classes
within the container class.
1) twitter.github.io/bootstrap/
scaffolding.html#responsive
2) blogs.endjin.com/2013/04/tips-for-implementing-responsive-designs-using-bootstrap
3) stackoverflow.com/a/12270322