Update usage docs to clear up confusion about customizing signup
Update usage docs to clear up confusion about customizing signup

There was some confusion with regards to the the custom
signup view example in that it was called `create_profile`
but it was clearly updating a profile that had already
been created.
jawed123/django-user-accounts,pinax/django-user-accounts,jacobwegner/django-user-accounts,gem/geonode-user-accounts,rizumu/django-user-accounts,swiharta/django-user-accounts-old,mysociety/django-user-accounts,mentholi/django-user-accounts,gem/geonode-user-accounts,rizumu/django-user-accounts,ntucker/django-user-accounts,nderituedwin/django-user-accounts,mgpyh/django-user-accounts,jmburbach/django-user-accounts,jacobwegner/django-user-accounts,GeoNode/geonode-user-accounts,jpotterm/django-user-accounts,jmburbach/django-user-accounts,mentholi/django-user-accounts,nderituedwin/django-user-accounts,jawed123/django-user-accounts,jpotterm/django-user-accounts,ntucker/django-user-accounts,osmfj/django-user-accounts,mysociety/django-user-accounts,pinax/django-user-accounts,GeoNode/geonode-user-accounts,gem/geonode-user-accounts,osmfj/django-user-accounts