Changed approach to logo inclusion
* Discovered that it was bad form to style an H1 element from an SEO perspective
* Changed the use of elements within index.html accordingly so that now H1 element is used to wrap an img and href
* H1 element was including line-spacing so added a style to main.css called no-padding that removed all margins
* Wanted to be able to position logo so introduced another class padding-from-top that dealt with that in main.css
* Removed old 'logo' style definition previously used to insert background image amongst other things
First version of the navigation
* Major restructuring the of the defined styles
* introduction of new styles for both the nav element, and the anchors within
* Moved the nav in to the header itself
* Floated the logo so that the menu would sit on the same line as it