Adding a "View docs/bla-bla.md on GitHub" button next to the
"Edit docs/bla-bla.md" button so that people can view the file
first without clicking the Edit button (which does not work without
forking the repository).
I did not need this because I was trying to do something without
forking. I just found it to be bit difficult to view source of a page
on GitHub.
I'm open to ideas, perhaps we can instead add an article footer button
named "View on GitHub" next to the "Edit this Page".
Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>