Ability to just return csv file

[snyaggarwal]

Slight variation of existing feature, wherein, Response is rendered.
This method will just return the file, and then based on the need app logic can do more things on csv (like uploading it to S3, and return the Response with S3 URL).

[coveralls]

Coverage decreased (-6.1%) to 93.893% when pulling 2c3315c on snyaggarwal:master into 3ab7a2c on azavea:master.

[maurizi]

Thank you for your contribution! Unfortunately, I don't think this is functionality that we want to add to this library at this time.

To emulate similar functionality, you can use the existing write_csv function directly from your program:

queryset = ...
with open('my-file-name.csv', 'w') as file_handle:
   write_csv(queryset, file_handle)

I'm curious, since you mention wanting this to be able to upload to S3, why not just use write_csv and pass it a file-like object such as BytesIO?
This would be better for uploading to S3, since you'll avoid creating any files locally.