Merge pull request aaronn#96 from null-none/master

Update README.md

Author: aaronn

README.md

@@ -309,16 +309,16 @@ DEFAULTS = {
     
     # What function is called to construct a serializer for drf tokens when
     # exchanging a passwordless token for a real user auth token.
-    'PASSWORDLESS_AUTH_TOKEN_SERIALIZER': 'drfpasswordless.serializers.TokenResponseSerializer'
+    'PASSWORDLESS_AUTH_TOKEN_SERIALIZER': 'drfpasswordless.serializers.TokenResponseSerializer',
 
     # A dictionary of demo user's primary key mapped to their static pin
     'PASSWORDLESS_DEMO_USERS': {},
 
     # configurable function for sending email
-    'PASSWORDLESS_EMAIL_CALLBACK': 'drfpasswordless.utils.send_email_with_callback_token'
+    'PASSWORDLESS_EMAIL_CALLBACK': 'drfpasswordless.utils.send_email_with_callback_token',
     
     # configurable function for sending sms
-    'PASSWORDLESS_SMS_CALLBACK': 'drfpasswordless.utils.send_sms_with_callback_token'
+    'PASSWORDLESS_SMS_CALLBACK': 'drfpasswordless.utils.send_sms_with_callback_token',
 
     # Token Generation Retry Count
     'PASSWORDLESS_TOKEN_GENERATION_ATTEMPTS': 3