add eventbrite importer model
Merge branch 'eventbrite_importer' into dev
remove db.yml from git repo
setup devise for attendees and users.
Merge branch 'integrate_attendees_devise_and_tickets' into dev
this adds multiple abstracts to attendees
Merge branch 'refine_multiple_abstracts' into dev
Merge v0.1.2 into master

Major features include: eventbrite importer, devise for attendees, and
multiple abstracts.