Remove live demo.

Because it's actually a dead demo.

Author: mblayman

AUTHORS

@@ -8,4 +8,5 @@ Matt Layman <https://www.mattlayman.com>
 Ola Tarkowska <ola@red-aries.com>
 Oliver Sauder <os@esite.ch>
 Raphael Cohen <raphael.cohen.utt@gmail.com>
+santiavenda <santiavenda2@gmail.com>
 Yaniv Peer <yanivpeer@gmail.com>

README.rst

@@ -20,7 +20,6 @@ Overview
 **JSON API support for Django REST Framework**
 
 * Documentation: http://django-rest-framework-json-api.readthedocs.org/
-* Live demo (resets every hour): http://json-api.jerel.co/
 * Format specification: http://jsonapi.org/format/