Add easy option to specify additional query parameters during the OAuth2 authorization process

src/main/html/index.html

@@ -51,7 +51,8 @@
               clientSecret: "your-client-secret",
               realm: "your-realms",
               appName: "your-app-name", 
-              scopeSeparator: ","
+              scopeSeparator: ",",
+              additionalQueryStringParams: {}
             });
           }