index.html the easy way:

If we give up markdown, we can be rendered from Rawgit / Bl.ocks.org with simple relative path:

• https://rawgit.com/cben/46d9536baacb7c5d196c/raw/index.html
• https://bl.ocks.org/cben/raw/46d9536baacb7c5d196c
• https://bl.ocks.org/cben/46d9536baacb7c5d196c (the reason same relative link works here is that it IFRAMEs the raw/ version.