[Cryptech Tech] Updated README - and discussion on needed documentation

[Randy Bush]

> Agreed, with the proviso that //somewhere// there needs to be overview
> documentation that explains how all the design objects {fit together |
> can be made to fit together | were intended to fit together} to do
> something useful.
> 
> Randy is no doubt laughing at this point, but keep in mind that in at
> least some cases, the person doing the build may not be the person who
> does the in-depth review of the security properties (etc) of all the
> pieces.  So we have to write doc not just for the wizard who's going
> to go over everything with a fine tooth comb but also for the code
> monkey who's been ordered to get the silly thing to build while the
> wizard flies off to another conference with fine lunches and dinners.

think quick start guide.  up front an overview and "impatient people
start here"

randy