site root is '/blog', so the permalink doesn't need '/blog'
s#/images#{{ site.root }}/images#
add disqus comments to the theme

The MediumFox theme didn't support disqus comments out of the box.
set disqus_short_name to 'startupvictoria'
turn comments on in the sample blog post
Merge branch 'master' of github.com:startupvictoria/blog