Rename AUTH0_AUDIENCE with API_IDENTIFIER

Fix #20

Author: paulioceano

00-Starter-Seed/.env.example

@@ -1,2 +1,2 @@
 AUTH0_DOMAIN={DOMAIN}
-AUTH0_AUDIENCE={API_AUDIENCE}
+API_IDENTIFIER={API_IDENTIFIER}

00-Starter-Seed/README.md

@@ -11,7 +11,7 @@ Please check our [Quickstart](https://auth0.com/docs/quickstart/backend/python)
 In order to run the example you need to have `python` and `pip` installed.
 
 You also need to set your Auth0 Domain and the API's audience as environment variables with the following names
-respectively: `AUTH0_DOMAIN` and `AUTH0_AUDIENCE`, which is the audience of your API. You can find an example in the
+respectively: `AUTH0_DOMAIN` and `API_IDENTIFIER`, which is the audience of your API. You can find an example in the
 `env.example` file.
 
 For that, if you just create a file named `.env` in the directory and set the values like the following,
@@ -20,7 +20,7 @@ the app will just work:
 ```bash
 # .env file
 AUTH0_DOMAIN=example.auth0.com
-AUTH0_AUDIENCE=YOUR_API_AUDIENCE
+API_IDENTIFIER={API_IDENTIFIER}
 ```
 
 Once you've set those 2 environment variables:

00-Starter-Seed/server.py

@@ -15,7 +15,7 @@
 if ENV_FILE:
     load_dotenv(ENV_FILE)
 AUTH0_DOMAIN = env.get("AUTH0_DOMAIN")
-AUTH0_AUDIENCE = env.get("AUTH0_AUDIENCE")
+API_IDENTIFIER = env.get("API_IDENTIFIER")
 ALGORITHMS = ["RS256"]
 APP = Flask(__name__)
 
@@ -114,7 +114,7 @@ def decorated(*args, **kwargs):
                     token,
                     rsa_key,
                     algorithms=ALGORITHMS,
-                    audience=AUTH0_AUDIENCE,
+                    audience=API_IDENTIFIER,
                     issuer="https://"+AUTH0_DOMAIN+"/"
                 )
             except jwt.ExpiredSignatureError: