Emit the signal user_logged_in when the user is authenticated.

Author: diegueus9

rest_framework_jwt/authentication.py

@@ -1,4 +1,6 @@
 import jwt
+
+from django.contrib.auth.signals import user_logged_in
 from django.utils.encoding import smart_text
 from django.utils.translation import ugettext as _
 from rest_framework import exceptions
@@ -40,6 +42,7 @@ def authenticate(self, request):
             raise exceptions.AuthenticationFailed()
 
         user = self.authenticate_credentials(payload)
+        user_logged_in.send(sender=user.__class__, request=request, user=user)
 
         return (user, jwt_value)