Updating users: Added edit form for user
Unsuccessful and Successful edits
Requiring sign-in to update user details
Requiring the right user for edit & update actions
Completed Authorization
Added users index page and other related functionalities
Added fake users with Faker gem
Added pagination with will_paginate on users index page
Re-factored users index page
Added admin column via migration
Finish user edit, update, index, and destroy actions