created a user model
fix db migrate
fix db migrate1
added user model validetion
remove annotet gem
user model validetion 2
added a stub User show page
added pg gem for production env
remove rspec-rails from production group
added config.assets.precompile += %w( *.css *.js ) to produdtion env for heroku compile
added encrypted password table and attr
fix encripted password test
added password and encrypted_password validation, and rake db:test:prepare and  rake db:migrate to user model
remove validates :password , :encrypted_password => true
adding user encrypted password method and test
added User authenticate method and added also test for this
finishing the password machinery
added spec/factories.rb
added a show page test
added gravatar gem for profile image and improved show page