Changes position of notifer email
add migration
Add gem devise
Generate devise install
Delete old code session
Add devise migration
Delete old files of session
Add views devise user
add field token to devise
Changes routes signin signup
Changes routes
Add devise routes
Add method authorize
Add token for api
Add migration token
Add method admin
Install gem omniauth
Tell to devise that i'll use onmiauth
Add provider for omniAuth
Add key and code secret