Major changes to structure and grunt tasks

Signed-off-by: Paul Welsh <p.welsh@building-blocks.com>
Logo html

Signed-off-by: Paul Welsh <p.welsh@building-blocks.com>
Merge branch 'master' of https://github.com/buildingblocks/bb-prototype-website

Signed-off-by: Paul Welsh <p.welsh@building-blocks.com>

Conflicts:
	Gruntfile.js
	src/pages/_index.hbs
	src/partials/_bb/responsive-link.hbs
	src/partials/footer.hbs
	src/partials/header.hbs