commented out failing test for Sign Up page
added user validation for presence of name; added explanatory comments
commented out validation to make test fail
added tests for validation of @user
added name length test
added name length validation
added email format validation
validated email format
fixed test (missing w with %)
added validation for uniqueness: true
created test for email uniqueness
added validation and testing for case insensitive email
working on email uniqueness
downcasing user.email
added test for password_digest; generated password_digest migration for User
added password digest?
added tests for password and password_confirmation
created pw and pwc for test user
test for not a blank password
test for password and confirmation mismatch