* Change how we setup travis to use composer to install all dependencies
The way were we installing Drupal for travis before was differnt from
how we installed it in the vagrant box. It required manually adding
dependancies for libraries. This should install all the dependancies
using composer automatically.
* Reformat readme to have 80 character line breaks.
New travis setup lints MD files, and wanted lines to me max 80
characters, so I used link references to make the readme easier
to format and made sure all the line break at 80 characters.