see pip-req.txt

    STATIC_ROOT = 'static/build'  # build directory

    ONLINE_STATIC_ROOT = 'static' # online prefix

    CDN_FINDER_PREFIX = 'http://static.example.com'

    INSTALLED_APPS = (
        'other apps',
        'cdn',
    )

    JINJA2_EXTENSIONS = (
        # extensions
        'cdn.extensions.CdnExtension',
    )