Updates .gitignore
Merge branch 'sample_app'
Merge branch 'sample_app'
Merge branch 'sample_app'
Merge branch 'sample_app'
Merge branch 'sample_app'
Merge branch 'sample_app'
Adds test for Sign Up page title
Adds test for full_title method in application_helper
Merge branch 'railstutorial-chap5-ex3'
Generates User model
Adds validation for User name and email
Adds validation for length of User name and email
Adds validation for format of email
Adds validation for email uniqueness
Adds db index to email and constraint for email uniqueness
Updates db to add password_digest to User
Adds validation for User password length