Add individual post view and route and update
index to link to new view.

Expect real dates for post instead of string.
Display just last 4 blogs on index page.
Use permalink and permalinkPrefix config.
Jade tweak.
Use my forked "feed" package for a feed-level ID
field.
Simplify config logic in app.js
Add initial atom feed. Add related HTML links.
Use forked 'feed' library to override an entry id.
Use bitesize library v0.0.5