* Update index page
* Update providers index page
* Make a little wording fix on containers index page
* Refactor factory provider docs header
* Update factory injection docs
* Update factory init injections example and picture
* Start work on underlying providers
* Finish the docs for factory arguments to the underlying providers
* Edit providers delegation section
* Edit section about specialized factory provider
* Edit abstract factory section
* Edit FactoryAggregate docs
* Add meta keywords and description
