Update org for ox-reveal

This lets us export org-mode things to reveal.js for pretty
presentations written in org. org-mode needs to be installed when there
is no org-mode loaded though so it is a bit of a pain. This commit
contains a clean install or org-mode.
Added nyan-mode to make @AnnaPawlicka happy.
Start and animate nyan cat.
Added jabber.el so I can use gtalk/jabber/xmpp.
deft is now f5.
Add a keybinding for jabber-connect-all.
Added erc config for internet relay chat goodness.
Rebound the windmove keys.

This is to avoid clashes with org-mode, paredit and the OS.
Added elnode.
Get rid of *~ being EVERYWHERE!
space tidyup.
Cut down to just the social channels.
Added a defun to open hailing frequencies.
Added section headings.
Switch to irc and hailing frequencies.
Tweet *right now* button.
Use js2-mode for javascript. Thx @sw1nn!
Getting rid of annoying mac only keys.
MELPA only for now.

Skipping marmalade for now. I'm sure it will come back.
Added markdown mode.

Mostly for working with github wiki pages and similar.