Fixes #326 - update components ref to use autobuilt version

The current setup requires the developer to compile `components.scss` 
and check-in the resulting `component.css`. The gulp tasks for serve 
and dist builds the file but the references for that asset in the pages 
point to the one in the repository.

This fix does the following:
- remove the checked-in version of the pre-compiled components.css
- update references in the pages to use autobuilt components.css
- update absolute reference in the style guide when built for distribution.

Hope this helps.