[add] Sensors Collection, Update button with update method
[add] comments telling us where to go next
[add] reading file in private/ successfully, seems to upsert it correctly but the page won't show the sensors in the db.
[fix] readded autopublish in order to see all values contained in the db. Reading files now works
(add) script updating 'toread' entry in the database with a random value
(enh) added dependencies to readme
(add) 'How it works on 131' in the readme
(ref) removed update button and toread file since the db will be fed from a python script and the client auto-updates when the db is updated.
(enh) tests if toread value exists in the db, inserts it if not