Add keychain to bash setup
Add TeX path to $PATH on OS X
README typo and tidying
Fix keychain usage

Not sure I read the man page properly first time around.
Have been seeing a "Failed to start gpg-agent" error, which I'll suppress
for now, until I actually want to use keychain with gpg-agent.
Overhaul Emacs setup

I know a bit more about Emacs and Elisp than when I first started, so
the setup can be replaced. Includes various fixes and improvements.

Splitting the code across multiple files was irritating to work with,
it's much easier to use a single file split into sections using Outline
Mode.
Update Emacs setup to match new Solarized variables