.config/rss2email.cfg: Reorganize subscribed feeds

Rather than listing (and checking) feeds in the order that I've added
them, I'll sort them into (rough) categories.  The new order is:

* comics
* journals
* software
* blogs
* news
* jobs
.config/rss2email.cfg: Add 'hyperbole-and-a-half'

Now that Allie Brosh has posted again :).  Depression sucks :(.
.config/rss2email.cfg: Update to rss2email v3.4

This version added post-process hooks and IMAP handling.
.config/rss2email.cfg: Add coding-confessional :)

Thanks to Mike Jackson for pointing this out [1].

[1]: https://github.com/swcarpentry/website/pull/539
     cf2226b (Added hints, tips, cautionary tales, blogs and humour
     links, 2013-05-13)
README.rst: Add symlink so GitHub knows which language to render
README: Update dotfiles-framework URL to point to GitHub