Beginning of restructing.

Moving away from the .zsh.d directory, in favor of .zsh/lib for
my standalone scripts, .zsh/plugins for oh-my-zsh plugins, and
.zsh/themes for oh-my-zsh themes.
zshenv: Rather than attempting to deal with certain paths here for all shells, interactive or not, just source our paths.zsh directory.
`whereis`: Gets past the `which` command just returning an
alias.

TODO: Make it cross-shell compatible
Add the /usr/local/[s]bin PATHs here.
Add the RVM PATHs here.
Just syntactical sugar for the Haskell PATHs
Introduce a way to remove non-extant directories from our PATH
The oh-my-zsh autoenv plugin had nothing to do with the shell wrapper,
so don't bother loading it.
Add PKG_CONFIG_PATH to .profile
zshrc: Conversion to zsh/lib layout
Rakefile:

Fix the issue where it always seemed to want to overwrite
zsh/plugins and zsh/themes:

Plugins:
* gem
* make

Themes:
mirell
Initial README. Just to show the shell file sourcing order
Remove 'jenv' submodule
Updated oh-my-zsh submodule