Merge pull request #1 from stephaniefrancis/master

Initial commit of conference list marked up along with Bootstrap 3 dist & SCSS
Increase font size of body copy to 21px
Replaces reference to minified Bootstrap CSS with raw CSS for during dev
Updates $base-font-size and adds custom typographic scale variables
Removes font-size: 21px;, adds more info about file structure, tweaks font-sizes using typographic scale
Removes minified CSS for the time being, updates compiled raw CSS files
Adds a .gitignore to clean things up!