Adding README

README.md

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+Rubik
+-----
+Rubik is a clean admin theme designed for use with the admin module. It features
+a set of icons for admin pages provided by Drupal core and aggressive styling to
+reduce visual noise wherever possible.
+
+
+Requirements
+------------
+You must install the [Tao][1] base theme for Rubik to operate properly.
+
+
+Overview for subthemers
+-----------------------
+Rubik can be used quite successfully as a base for non-admin themes. Here are
+some reasons you might want to use Rubik as a base theme:
+
+- You want to inherit its styling for form and other major page elements.
+- You want to inherit its admin-element styling, e.g. you want to use the same
+theme for both the frontend and backend.
+- You want to inherit form layouts and preprocess routing that Rubik provides.
+
+Before beginning to subtheme based on Rubik, please read the README included
+with Tao. As Rubik is a subtheme of Tao, many of the principle and ideas in Tao
+apply to subtheming Rubik as well.
+
+
+### Form theming
+
+To work with form theming in Rubik (and Drupal in general) you should become
+familiar with [`drupal_render()`][2]. Form rendering in Rubik is done in the
+**template file**, not the preprocess, allowing any additional preprocessors to
+alter the form in its structured state.
+
+Rubik pushes many system forms through a series of additional preprocess
+functions before templating.
+
+- `rubik_preprocess_form_buttons()` detects any root level submit and button
+type elements and groups them together under `$form['buttons']` so they can be
+placed in a wrapping element.
+- `rubik_preprocess_form_legacy()` handles legacy theme function-based forms
+that use a declared theme function. It will first render the form using the
+function specified by `#theme` and then generate a form array that can be used
+with `drupal_render()` in templates.
+
+
+### Icon classes
+
+The admin icons in Rubik are displayed using a CSS sprite and corresponding CSS
+class. The class that refers to each icon is based on a link path to the admin
+page. For a path at `admin/settings/foo`, the classes added to the containing
+element of `span.icon` are:
+
+  - `path-admin-settings-foo`
+  - `path-admin-settings`
+  - `path-admin`
+
+This allows for your element to fallback to a more generic, placeholder icon if
+the most specific class cannot be used.
+
+
+### Object & form template layouts
+
+Rubik groups elements in the tao object template and various forms into two
+columns.
+
+- For object templates (`theme('node')`, `theme('comment')`, etc.) you can
+switch to a typical 1-column layout in you  preprocess function:
+
+        $vars['layout'] = FALSE;
+
+- For form templates, you should use `hook_theme()` to and declare the form's
+template as `form-simple`. If a prior preprocess has moved form elements in
+`$vars['sidebar']` for the form, you will need to move them back to the
+`$vars['form']` element.
+
+        // Switch comment form back to simple layout.
+        function mysubtheme_theme() {
+          $items['comment_form'] = array(
+            'arguments' => array('form' => array()),
+            'path' => drupal_get_path('theme', 'rubik') .'/templates',
+            'template' => 'form-simple',
+          );
+          return $items;
+        }
+
+
+### Stylesheets
+
+- `core.css` provides styles for standard Drupal core markup elements, in
+particular form elements, list items, pagers, etc. It does not style any "page
+wrapper" or "design elements" like the site logo, navigation, etc.
+- `icons.css` provides styles for the admin icons provided by Rubik.
+- `style.css` provides styles for the Rubik admin theme page wrapper and other
+aesthetic elements. This includes the site title, tabs, navigation, breadcrumb,
+etc. **This is the file you will most likely want to override to begin your
+subtheme.**
+
+
+Issue tracking
+--------------
+The code for Rubik is hosted on GitHub. Please report issues and submit
+patches/fork requests at http://github.com/developmentseed/rubik. You can
+download packages of the latest release of Rubik at
+http://code.developmentseed.org/tao.
+
+
+Maintainer
+----------
+- yhahn (Young Hahn)
+
+
+[1]: http://code.developmentseed.org/tao
+[2]: http://api.drupal.org/api/function/drupal_render/6