build out reviews, create/add to scheduled reviews
switch to custom user authentication
bump ruby version, add to gitignore
Merge branch 'master' of github.com:mcasper/memknow into MEM-002

Conflicts:
	Gemfile.lock
	app/views/devise/_login_items.html.erb
	app/views/devise/_registration_items.html.erb
	app/views/layouts/application.html.erb
moved devise/* to shared/*