Update .gitignore.
Update .gitignore.

Update .gitignore with version from
https://github.com/github/gitignore/blob/master/Python.gitignore. This
should prevent build, dist, or other files that should not be part of
the repository from being accidentally included in the future.

AliLozano/django-messages-extends,AliLozano/django-messages-extends,AliLozano/django-messages-extends