Adding pagination

The list views for users and code snippets could end up returning quite a lot of instances, so really we'd like to make sure we paginate the results, and allow the API client to step through each of the individual pages.

We can change the default list style to use pagination, by modifying our tutorial/settings.py file slightly. Add the following setting:

REST_FRAMEWORK = {
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
    'PAGE_SIZE': 10
}

Note that settings in REST framework are all namespaced into a single dictionary setting, named REST_FRAMEWORK, which helps keep them well separated from your other project settings.

We could also customize the pagination style if we needed too, but in this case we'll just stick with the default.