Greenmine/folders

Copied directly from code comment; needs minor updating, formating:

  FOLDER LAYOUT: Lines marked CANON are canonical; the rest are mainly as examples for clarity
    $home/public_html
    $home/site
      $home/site/config
        $home/site/config/greenmine
          $home/site/config/greenmine/portable - CANON: 
          $home/site/config/greenmine/portable/defaults.php - CANON: THIS FILE (link to git version, or copy)
          $home/site/config/greenmine/local/creds.php - CANON: database credentials, adapted from git/greenmine/config/examples/creds.php
      $home/site/git
        $home/site/git/ferreteria
        $home/site/git/greenmine  - CANON
          $home/site/git/greenmine/config/portable - CANON: config files which (usually) can be used as-is
            $home/site/git/greenmine/config/portable/defaults.php - CANON: THIS FILE (git version)
          $home/site/git/greenmine/config/examples - CANON: files which will need configuration for local instance
            $home/site/git/greenmine/config/examples/creds.php - CANON: database credentials (to be configured)