04: Setting up to Go Live
Add route to display environment
sessions simple example
implement simple login
simple authorization
/logout
heroku create book-Jump-Start-Sinatra
Gemfile with dev & prod groups
config.ru
checking in Gemfile.lock for heroku
Gemfile: move sqlite to development
move configuration to main.rb and add :development db config
notes on using heroku
remove unnecessary output from seed.rb