6.1.1 - create migration for user model using 'rails generate model' ; create sqlite db by running rake db:migrate
6.2.1 - add initial user tests in user model spec, to test for existence of user attributes. remember to run rake tasks (db:migrate ; test:prepare) before running rspec
6.2.2-5 : add User validations for name and email's presence, length, format and uniqeness
6.3.1 - add brcrypt-ruby gem to Gemfile, to encrypt password. Run bundle install to install gem
6.3.1 - update user model spec to check for presence of password_digest column in User table, then generate migration to create column to make test pass
6.3.2 - add password and password confirmation test to user model spec. Tests currently fail
6.3.3-4 - add tests to user model spec to test for password authentication, and minimum password length; update user model to validate minimum password length and create a secure password hash. Rspec tests all green
6.5 - add changes from exercises. Tests all green. Levelling up