PatternPress is a WordPress theme for creating and managing pattern libraries.
Add your markup and css, and PatternPress will create a live demo of the pattern. For example: Buttons.
PatternPress also supports global resources: shared css and/or js used across patterns.
This demo shows a couple of patterns from the Bootstrap framework, but PatternPress supports any html/css/js patterns.
The page you are currently looking at is a basic page, without any pattern details like markup or css. You can mix and match pattern pages and standard pages and organize them however works best for you. Explore this demo site for examples of patterns and resources, then head over to GitHub to download PatternPress. (Feel free to fork it too!)