Update gem versions
Update Capybara to 2.4.3
Remove test directory
Add specs for Contact and Phone models
Use not_to instead of to_not
Use factories to create test contacts and phones
Remove unneeded require 'faker' from factories
Add basic specs for contacts controller
Add authentication/authorization controller specs
Clean up contacts controller spec (chapter 7)
Add feature specs (chapter 8)
wip chapter 9: let, shoulda