tweaking assemble task for the site, later will come the demo #2
better builds dir, see #2
made some substantial changes to default layout, added proper markup for secitons, header and footer, see #2
cleaning up structure, removed apple icons, why there? moved image to new images dir, same w/ chart.js and cleaned up default layout markup a bit
moved some chartjs and burndown image
big re-org of all the files, moving pretty much everything into src and dist folders