Merge pull request #1 from ivana-mcconnell/master

adding bootstrap v 3.1.1
Adding CNAME back in
Merge pull request #2 from ivana-mcconnell/master

bootstrap things, extra styles
Splitting out the course sections

Signed-off-by: Alan Gardner <urfolomeus@gmail.com>
Adding exercises
And tidying up :)
Some more exercise tweaks
css sample