Переход на Django 1.10

[Timur]

1. Обновление urlpatterns

C:\Users\~~~~~~~~~~~~\lambda\lib\site-packages\django_markdown\urls.py:8: 
RemovedInDjango110Warning: django.conf.urls.patterns() is deprecated and will be removed in 
Django 1.10. Update your urlpatterns to be a list of django.conf.urls.url() instances instead.
  '', url('preview/$', preview, name='django_markdown_preview'))