1,用户注册登录
2,ajax发送消息,长轮询接收消息
3,队列queue存储消息
+--chat
| +--settings.py
| +--urls.py
| +--wsgi.py
| +--__init__.py
+--manage.py
+--qq
| +--admin.py
| +--apps.py
| +--common.py
| +--migrations
| +--models.py
| +--tests.py
| +--views.py
| +--__init__.py
+--static
| +--css
| +--js
+--templates
| +--index.html
| +--login.html
| +--qq.html