Fix readme

README.md

@@ -10,20 +10,13 @@ Ecowitt driver for homeassistant
       barounit: metric
       windunit: imperial
       rainunit: imperial
+      lightningunit: imperial
       windchillunit: hybrid
 
 Windchill can be one of "hybrid", "old", or "new".  Defaults for units are
 as shown above.  The only mandatory "option" is "port".  Units can be one of
 "metric" or "imperial".
 
-## Warning
-
-This device expects to be fed data from an ecowitt during hass startup.
-Without this data, it doesn't know what devices to wire up.
-Hopefully I can fix this in the future, but for now, do the setup on the
-ecowitt device first, then add this to your configuration.yaml file.
-If you do not, hass may hang on startup.
-
 ## How to set up:
 
 Use the WS View app (on your phone) for your Ecowitt device, and connect to it.
@@ -42,8 +35,5 @@ to your server.
 Add config as shown above to configuration.yaml.  Port is required.
 Pick the same port you did in the wsview app.
 
-If you set a really long delay on updates, homeassistant could take awhile to
-start.
-
 If you get an error in the logs about an unhandled sensor, open an issue and
 paste the log message so I can add the sensor.