Construct novice shell lesson.

[gvwilson]

Construct a lesson for novices on the Unix shell in bash/novice.

[wking]

On Sat, Nov 02, 2013 at 08:55:07AM -0700, Greg Wilson wrote:

Construct a lesson for novices on the Unix shell in bash/novice.

I've got the history of the hackerwithin shell lesson and associated
exercises in swc-modular-shell.git, swc-modular-shell-hello.git,
swc-modular-shell-hearing.git, swc-modular-shell-dictionary.git, and
swc-modular-shell-genotype.git, all of which are available from
git://tremily.us/$REPO. If you're looking for any of that for the
novice shell material, I can work up a pull request along the lines of
#114. Just let me know what parts you'd like to bring in.