Project requirements

Signed-off-by: Balthazar Rouberol <brouberol@imap.cc>
Definition of the leboncoin ad wrapper

Signed-off-by: Balthazar Rouberol <brouberol@imap.cc>
Definition of the celery application

Signed-off-by: Balthazar Rouberol <brouberol@imap.cc>
Definition of the crawling task

Signed-off-by: Balthazar Rouberol <brouberol@imap.cc>