Update CONTRIBUTING for the new branch naming scheme
Update CONTRIBUTING for the new branch naming scheme

gwasser/django-helpdesk,gwasser/django-helpdesk,gwasser/django-helpdesk,django-helpdesk/django-helpdesk,django-helpdesk/django-helpdesk,gwasser/django-helpdesk,django-helpdesk/django-helpdesk,django-helpdesk/django-helpdesk