Imply an additional element in infinite lists

This is to allow the addition of elements without
having to change existing lines of code

docs/tutorial/1-serialization.md

@@ -60,7 +60,7 @@ We'll also need to add our new `snippets` app and the `rest_framework` app to `I
     INSTALLED_APPS = (
         ...
         'rest_framework',
-        'snippets'
+        'snippets',
     )
 
 We also need to wire up the root urlconf, in the `tutorial/urls.py` file, to include our snippet app's URLs.
@@ -288,7 +288,7 @@ Finally we need to wire these views up. Create the `snippets/urls.py` file:
 
     urlpatterns = patterns('snippets.views',
         url(r'^snippets/$', 'snippet_list'),
-        url(r'^snippets/(?P<pk>[0-9]+)/$', 'snippet_detail')
+        url(r'^snippets/(?P<pk>[0-9]+)/$', 'snippet_detail'),
     )
 
 It's worth noting that there are a couple of edge cases we're not dealing with properly at the moment.  If we send malformed `json`, or if a request is made with a method that the view doesn't handle, then we'll end up with a 500 "server error" response.  Still, this'll do for now.

docs/tutorial/2-requests-and-responses.md

@@ -117,7 +117,7 @@ Now update the `urls.py` file slightly, to append a set of `format_suffix_patter
 
     urlpatterns = patterns('snippets.views',
         url(r'^snippets/$', 'snippet_list'),
-        url(r'^snippets/(?P<pk>[0-9]+)$', 'snippet_detail')
+        url(r'^snippets/(?P<pk>[0-9]+)$', 'snippet_detail'),
     )
     
     urlpatterns = format_suffix_patterns(urlpatterns)

docs/tutorial/3-class-based-views.md

@@ -70,7 +70,7 @@ We'll also need to refactor our URLconf slightly now we're using class based vie
 
     urlpatterns = patterns('',
         url(r'^snippets/$', views.SnippetList.as_view()),
-        url(r'^snippets/(?P<pk>[0-9]+)/$', views.SnippetDetail.as_view())
+        url(r'^snippets/(?P<pk>[0-9]+)/$', views.SnippetDetail.as_view()),
     )
     
     urlpatterns = format_suffix_patterns(urlpatterns)

docs/tutorial/4-authentication-and-permissions.md

@@ -77,7 +77,7 @@ We'll also add a couple of views.  We'd like to just use read-only views for the
 Finally we need to add those views into the API, by referencing them from the URL conf.
 
     url(r'^users/$', views.UserList.as_view()),
-    url(r'^users/(?P<pk>[0-9]+)/$', views.UserInstance.as_view())
+    url(r'^users/(?P<pk>[0-9]+)/$', views.UserInstance.as_view()),
 
 ## Associating Snippets with Users
 
@@ -134,7 +134,7 @@ And, at the end of the file, add a pattern to include the login and logout views
 
     urlpatterns += patterns('',
         url(r'^api-auth/', include('rest_framework.urls',
-                                   namespace='rest_framework'))
+                                   namespace='rest_framework')),
     )
 
 The `r'^api-auth/'` part of pattern can actually be whatever URL you want to use.  The only restriction is that the included urls must use the `'rest_framework'` namespace.

docs/tutorial/5-relationships-and-hyperlinked-apis.md

@@ -116,7 +116,7 @@ After adding all those names into our URLconf, our final `'urls.py'` file should
         url(r'^snippets/(?P<pk>[0-9]+)/$',
             views.SnippetDetail.as_view(),
             name='snippet-detail'),
-        url(r'^snippets/(?P<pk>[0-9]+)/highlight/$'
+        url(r'^snippets/(?P<pk>[0-9]+)/highlight/$',
             views.SnippetHighlight.as_view(),
             name='snippet-highlight'),
         url(r'^users/$',
@@ -130,7 +130,7 @@ After adding all those names into our URLconf, our final `'urls.py'` file should
     # Login and logout views for the browsable API
     urlpatterns += patterns('',    
         url(r'^api-auth/', include('rest_framework.urls',
-                                   namespace='rest_framework'))
+                                   namespace='rest_framework')),
     )
 
 ## Adding pagination