CanalTP/navitia — pull request #581 by antoine-de (2014-09-24 08:46:38+00:00)
Title: Jormungandr: add validity pattern to vp

linked to http://jira.canaltp.fr/browse/NAVITIAII-975

add the validity pattern.

for the moment we only have the string with 1 if active on the nth day ((from the beginning date) else 0.
It will be transformed to human sentences afterward.