Add Sankey viz basic. Still need to update headers and links.
Change header and title of Sankey page
Update links for all pages to point to Sankey on local site
Change link of Sankey image on front page to point to local Sankey page
Give Disqus unique page info
Remove CNAME for testing on daguar Github
Merge pull request #4 from daguar/gh-pages

Added Sankey diagram page and changed relevant link URLs