First working version with devise+rails_admin

db/seeds.rb

@@ -5,3 +5,4 @@
 #
 #   movies = Movie.create([{ name: 'Star Wars' }, { name: 'Lord of the Rings' }])
 #   Character.create(name: 'Luke', movie: movies.first)
+admin = Admin.create([{email: 'admin@example.org', password: 'password'}])