Add Devise gem for user auth
Update Devise
Add first_name, last_name and username columns to Users table.
Add validations to User model.
Style Devise Sign Up view
Update Devise sign up layout
Remove Devise shared links from sign up
Add Log Out link to admin navigation
Style devise sign_in view
Allow first_name, last_name and username params for devise sign_up
Move errors into general errors partial.
Move label styling into layouts stylesheet
Indicate required fields on Post and sign_in forms
Display flash messages in application and admin layouts
Add close to flash messages, adjust padding on flash messages.
Rearrange validation order on User model
Add User factory. Add feature spec for user sign in and sign up.
Adjust flash message close font size
Merge pull request #5 from Steveo1485/feature/add-users

Feature/add users