Update the docs to show the injected HttpRequest in the token getter

README.md

@@ -88,7 +88,7 @@ export class AppComponent {
 
 ## Configuration Options
 
-### `tokenGetter: function`
+### `tokenGetter: function(?HttpRequest)`
 
 The `tokenGetter` is a function which returns the user's token. This function simply needs to make a retrieval call to wherever the token is stored. In many cases, the token will be stored in local storage or session storage.
 
@@ -104,6 +104,24 @@ JwtModule.forRoot({
 });
 ```
 
+If you have multiple tokens for multiple domains, you can use the `HttpRequest` passed to the `tokenGetter` function to get the correct token for each intercepted request.
+
+```ts
+// ...
+JwtModule.forRoot({
+  config: {
+    // ...
+    tokenGetter: (request) => {
+      if (request.url.includes("foo")) {
+        return localStorage.getItem("access_token_foo");
+      }
+
+      return localStorage.getItem("access_token");
+    },
+  },
+});
+```
+
 ### `whitelistedDomains: array`
 
 Authenticated requests should only be sent to domains you know and trust. Many applications make requests to APIs from multiple domains, some of which are not controlled by the developer. Since there is no way to know what the API being called will do with the information contained in the request, it is best to not send the user's token to all APIs in a blind fashion.