old_contents: """rcard URL Configuration
  
  The `urlpatterns` list routes URLs to views. For more information please see:
      https://docs.djangoproject.com/en/1.8/topics/http/urls/
  Examples:
  Function views
      1. Add an import:  from my_app import views
      2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
  Class-based views
      1. Add an import:  from other_app.views import Home
      2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
  Including another URLconf
      1. Add an import:  from blog import urls as blog_urls
      2. Add a URL to urlpatterns:  url(r'^blog/', include(blog_urls))
  """
  from django.conf.urls import include, url
  from django.contrib import admin
  
  from rest_framework import routers
  from waterfall_wall import views
  
  router = routers.DefaultRouter()
  router.register(r'images', views.ImageViewSet)
  
  urlpatterns = [
      url(r'^', include(router.urls)),
      url(r'^admin/', include(admin.site.urls)),
      url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework')),
  ]
  
new_contents: """rcard URL Configuration
  
  The `urlpatterns` list routes URLs to views. For more information please see:
      https://docs.djangoproject.com/en/1.8/topics/http/urls/
  Examples:
  Function views
      1. Add an import:  from my_app import views
      2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
  Class-based views
      1. Add an import:  from other_app.views import Home
      2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
  Including another URLconf
      1. Add an import:  from blog import urls as blog_urls
      2. Add a URL to urlpatterns:  url(r'^blog/', include(blog_urls))
  """
  from django.conf.urls import include, url
  from django.contrib import admin
  
  from rest_framework import routers
  from waterfall_wall import views
  
  router = routers.DefaultRouter()
  router.register(r'images', views.ImageViewSet)
  
  urlpatterns = [
      url(r'^api/', include(router.urls)),
      url(r'^admin/', include(admin.site.urls)),
      url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework')),
  ]
  
subject: Add api prefix for image API