Update README.md

README.md

@@ -11,6 +11,7 @@ If Home Assistant is already using the MQTT integration, then the various entiti
 
 ### Note regarding polling / reading of state
 The original production release didn't poll to read state. You (or more likely a HA automation) needed to press the 'Force Data Update' button to read / update the state. This development version adds the option of automatic polling of state. Note the following:
+ - It is a DEVELOPMENT version so will have more issues than the production version. It might not even work at all. I put it here for people to test and give feedback, in order to improve it to the state where it can be come a production release
  - Two new entities have been added to control polling. The Polling switch enables or disables polling completely for the selected car. The Polling Interval number determines in seconds how often (approximately) polling takes place. The minimum setting is 30 secs, maximum is 3600 secs. Values MUST be a multiple of 30. I recommend setting this to a minimum value of 660 to prevent the car staying awake and draining the battery due to excessive polling. If the car is charging it can be reduced as required. Intervals less than 60 (for a single car setup) are not recommended if polling all state categories as all entities may not be returned before the next poll starts, which will eventually lead to the system breaking
  - It is possible to exclude selected state categories (i.e. charge, climate, tire-pressure, closures, drive) from the polling sequence. This speeds up the poll, thereby allowing lower values of polling interval to be reliably selected. To exclude categories from the poll, include the category name in a space separated list of names in the Docker environment variable NO_POLL_SECTIONS. E.g. to only poll the charge category you would set NO_POLL_SECTIONS='climate tire-pressure closures drive'
  - The poll will only take place if the car is awake at the moment the poll is attempted. It will not wake the car if it is asleep to prevent battery drain issues. Once the car is asleep you will have to wake it if you want polling to recommence. You can wake the car by turning on charging power, or sending a command for example. If the polling interval is 660 or greater, the car  will likely be asleep by the time the next poll comes around (in 11 minutes). Whilst the implementation used here is not identical, the principle is described well here https://github.com/alandtse/tesla/wiki/Polling-policy