Documentation-o-rama

A first stab at documenting the three projects.  More detail on Kronos than the other projects.  Also some information on contributing, style guide, etc.
so basically we have conf/default_settings.py, which is part of the codebase that will be installed with setup.py.  settings.py.template is an exact copy of it, but the user can edit it and pass it in as a `--config` arg.  the `--config` arg will overwrite the defaults, which allows users to run without configuration initially (basic defaults) and slowly change the defaults.

sound sane?