title: Django Rest Swagger -> No Authentication + multiple apps
body: <p>We are looking to use <code>django swagger</code> for generating REST API docs. Our app consists of many sub apps and all views use <code>JWT</code> authentication. Document seems very lacking and just mentions the adding of url. This shows me error <code>400 : ["The schema generator did not return a schema Document"] http://10.0.0.61:8001/API/?format=openapi</code></p>
  
  <pre><code>from rest_framework_swagger.views import get_swagger_view
  
  schema_view = get_swagger_view(title="HashCove REST API")
  urlpatterns = [
      url(r'^admin/', admin.site.urls),
      url(r'info/', BackendVersion.as_view()),
      url(r'^transaction/', include('kyc_rest_services.kyc_connect_transaction_manager.urls')),
      url(r'^drive/', include('kyc_rest_services.carbon_drive.urls')),
      url(r'^channels/', include('kyc_rest_services.channels.urls')),
      url(r'^accounts/', include('kyc_rest_services.kyc_connect_accounts.urls')),
      url(r'^API/', schema_view, name="docs")
  ]
  </code></pre>
  
  <p>Can it show all the APIs in the other apps and no authentication required.</p>