added user model, added secure passwords
user resources and setting up integratin test for users page
aded factorigirl gem for testing, and sidebar
integration test for user creating, signup
added signup user and show page, with test
specs for signin, and signin view
added token attribute to users table, for sessions
Added SecureRandom and SHA method for sessions token--on user model
user drop down menu, and sessions for sign in complete
sign out complete