Done :
GET /rooms/presence/{id} : Presence rate (in %) of the last days for the room {id}
GET /rooms/presence/{id}/{day} : Presence rate (in %) for the room {id} and the date {day}

Signed-off-by: Thomas Marques <marquesthom@gmail.com>
Merge branch 'master' of https://github.com/yakunkun/yakunkun-server

Conflicts:
	sensors-rest/README.md
	sensors-rest/web/index.php

Signed-off-by: Thomas Marques <marquesthom@gmail.com>