Merge beta sample in master (auth0-samples#336)

Author: frederikprijck

Sample-01/auth_config.json.example

@@ -1,7 +1,9 @@
 {
   "domain": "{DOMAIN}",
   "clientId": "{CLIENT_ID}",
-  "audience": "{API_IDENTIFIER}",
+  "authorizationParams": {
+    "audience": "{API_IDENTIFIER}"
+  },
   "apiUri": "http://localhost:3001",
   "appUri": "http://localhost:4200",
   "errorPath": "/error"