Fix files that are missing their final newline
Fix API version - v0.1 is current, v1 is from the old version scheme
In recent PopIt, 'organisation' is now spelled 'organization'
The collection is now referred to as persons
Ignore backup files from common text editors
Rename the popit module to popit_api to avoid a name clash

Unfortunately, the name popit at the top level clashes with
popit-django, which is more widely used at the moment.  So,
rename the popit module to popit_api.
Update the README for the current popit-api