Thermostat : v2

Done:

  * utility functions (char/float conversion), reading temp, sampling it
  * connect to wireless network
  * wait on network for instructions
  * process basic instructions

TODO:
  * put back temp sampling on
  * use a time interrupt to periodically check if we have network data

BUG:
  * 1 instructions is fine.
  * subsequent instructions make thermino to reboot
modif to gitignore
temp sensor quite accurate now.

pinpointed a conflict between serial and LCD (once Serial is up and running, we print garbage on lcd)

need to rewire LCD on analog pins

next step: interrupt and wireless
 more ignore
rewired everything

now:
thermino is pingable
temperature is sampled and displayed correctly
Timer interrupt //seems// to be working

When sending "a" command (request all current info) i **sometime** get a response, but it put thermino in a bad state, which requires a reboot.

Bet on some fuck up in string handling
spent 1hour trying to fix issue...
network comm works nicely except for "set target temp" switch case block.

set up a small python client, which can get almost everything we want
embryon de page web en place

adaptation des scripts de génération de graph
adding cronjob to keep an eye on temperature, a quick and dirty script to graph it
should be ignored
we can now set target temp \!
possibilité de changer temptarget depuis l'interface web
removed Serial.print DEBUG statements
enhance graphing support, changed sampletime to 1 minutes
now we are also plotting heater status
client.php: 1 graph par jour, possibilité de consulter le graph des jours précédents
clean up source tree
mise en place rotation des logs et des graphiques
worked on fritzing schema
added base support for ecomode setting / getting. it build, but no test yet