This is a simple OAuth example provider and importer endpoint. The user first hits /oauth/authorize which redirects to /oauth/success when they clik OK. That issues a code which is returned to /oauth/access_token which issues an access token to be used with /import.
This is running live on http://og-importer-example.herokuapp.com/
If you run it on heroku, it needs the free memcache addon. You can get it with:
heroku addons:add memcache:5mb