Add docs for manual token creation

README.rst

@@ -309,6 +309,29 @@ for the view, which is in turn used to generate the view's access token.
 As with the standard token views, you'll also need to include a url route to
 your subclassed view.
 
+Creating tokens manually
+------------------------
+
+Sometimes, you may wish to manually create a token for a user.  This could be
+done as follows:
+
+.. code-block:: python
+
+  from rest_framework_simplejwt.tokens import RefreshToken
+
+  def get_tokens_for_user(user):
+      refresh = RefreshToken.for_user(user)
+
+      return {
+          'refresh': str(refresh),
+          'access': str(refresh.access_token),
+      }
+
+The above function ``get_tokens_for_user`` will return the serialized
+representations of new refresh and access tokens for the given user.  In
+general, a token for any subclass of ``rest_framework_simplejwt.tokens.Token``
+can be created in this way.
+
 Token types
 -----------