Add retrieval from le monde diplomatique
Previously, 404 pages were injected in the document when downloading
styles
Now, the downloader returns None when documents are not found
A builder for mediapart have been added. No generic builder have been
created as there is no usecase yet.
Some documentation have been added, roadmap and scope have been
clarified and chatbot have been lightly documented.
A first example as well as some documentation have been added
The first example builds an article location and download the article as
an html String.
The documentation explains how it has been designed and what is the goal
of the application as well as it's intended architecture
