.config/rss2email.cfg: Add Computing Education feeds

Lots of good citations in here.
.config/rss2email.cfg: Add "Welcome to Night Vale" feed
.config/rss2email: Add Scott Adam's blog
.config/rss2email.cfg: Add eScience Institute blog

An important field, and the UW folks are close by.  So far things look
a bit managerial, but we'll see how it develops ;).
.pqivrc: Update for Pqiv v2.0 config syntax

pqiv switched to INI syntax with v2.0, so update the config
accordingly.

https://github.com/phillipberndt/pqiv/blob/master/pqiv.1
.bash_profile: Use tabs for indenting

Then folks can set tab-width to whatever they like.
.bash_profile: Add ~/.gem/*/bin to the PATH (if they exist)

This allows you to automatically run Ruby gems without tweaking your
PATH.