docs(README.md): add tenant and domain

Author: sermojohn

README.md

@@ -10,10 +10,10 @@ because they identify the client account and are pre-configured on the Authentic
 environment variables:
 ```
 declare -x CODEBGP_AUTH_CLIENT_ID=`auth-client-id` \
-    CODEBGP_AUTH_DOMAIN=`auth0-domain`
+    CODEBGP_AUTH_DOMAIN=login.codebgp.com
 ```
 
-2. `--username` and `--password` are required for the initial authentication (#1). `--jwt_audience` is implicitly propagated to tokens on refresh and it receives a default value when omitted.
+2. `--username`, `--password` and `tenant-id` are required for the initial authentication (#1). `--jwt_audience` is implicitly propagated to tokens on refresh and it receives a default value when omitted.
 
 3. `CODEBGP_ACCESS_TOKEN`  `CODEBGP_REFRESH_TOKEN` are state variables, updated by authentication commands and used to keep the state of the currently used tokens. `CODEBGP_ENDPOINT` is extracted from the `CODEBGP_ACCESS_TOKEN` payload custom claim to dynamically set the API endpoint from the access token.
 
@@ -24,7 +24,7 @@ The commands below depend on `jq` for JSON processing, but any similar tool can
 
 1. Fetch the `CODEBGP_ACCESS_TOKEN` and `CODEBGP_REFRESH_TOKEN`:
 ```
-temp=$(./get-token.sh --username=`username` --password=`password`) \
+temp=$(./get-token.sh --username=`username` --password=`password` --tenant=`tenant-id`) \
     && CODEBGP_ACCESS_TOKEN=$(echo $temp | jq -r .access_token) \
     && CODEBGP_REFRESH_TOKEN=$(echo $temp | jq -r .refresh_token)
 ```