Remove better_errors.gem from development requirements
Simplify main box style

Remove box shadow
@diary -> primary_diary
Add capybara and turnip to test requirements
Add User factory
Add feature spec for sessions
Add feature spec for entries
Add a Rake task runs feature specs
Return message id when test environment
Use shared context/examples
Merge branch 'feature/feature-spec'

Merge #29

Conflicts:
	Gemfile
	Gemfile.lock
	app/controllers/entries_controller.rb