Updated Readme for auto generate entities docker

README.md

@@ -28,6 +28,7 @@ The following environment variables are available to identify your Home Assistan
 * `HASS_HOST`, defaults to *localhost*
 * `HASS_PORT`, default to *8123*
 * `HASS_TOKEN` needs to be set to a valid access token.
+* `HASS_GEN_ENTITIES`, defaults to False, set True if you want the autogenerated entities
 
 Example giving:
 ```
@@ -36,6 +37,7 @@ docker run -d \
   --restart=always \
   -e HASS_HOST=192.168.1.1 \
   -e HASS_TOKEN=XXXXX \
+  -e HASS_GEN_ENTITIES=False \
   -v ~/netdaemon_config:/data \
   netdaemon/netdaemon
 ```