Google Snippets and other Structured Data

[ElectricMaxxx]

By the helpf of Structured Data You can enrich a content page by a lot more meta data then in the key tags.
That said, i think we need that as an feature for our seo-bundle. The twig helpe coulld be implemented in sonata's SeoBundle (ok @gregoire ?) and we pass the content data we have or add an an extra docuement to our Metadata.