Rename stylesheet application.css to application.css.scss
Add 'bootstrap-sass' gem
Add Twiter Bootstrap CSS and JS

 * We use the added bootstrap_and_overrides.css.scss to import both the
 standard and responsive CSS Bootstrap libraries.
 * We could have imported them into our standard application.css.scss
 file, but used this additional file to keep our css better organized.
 * Should we wish to make changes to the default Bootstrap CSS, we will
 do so in this additional file.
Setup SimpleForm to use Bootstrap Styling

 * Run: rails g simple_form:install --bootstrap
Add gray background to pages.
Convert layout application.html.erb file to Haml

 * Add in the %meta tag/content
 * Add in the .content CSS class