* Refactor services mini app with single container
* Make few little fixes to single container app
* Update requirements.txt for single container example
* Refactor multiple containers example
* Add single container docs page
* Create multiple containers page
* Add bootstrap and remove created at from ghnav-flask app
* Update readme
* Add logo to the docs
* Update key features description
* Update README
* Change headers of API docs
* Add alabaster theme config
* Update docs index
* Add tutorials section
* Update what is DI page
* Update DI in Python page
* Update tutorials index page
* Update provider docs
* Update container docs
* Update examples docs