Adding sequence method for FactoryGirl,
Adding a rake task for Faker to make users,
Refactoring the users index, and writing tests.
All tests are green, about to start Chapter 9.4
Adding the ability to delete users
Added tests that prevent a user from deleting another via a malicious request.
Made the first sample user an admin using non-mass assignment.
Wrote more tests for the admin abilities and deletion methods.