simple memo, initializer run

Class Rails::Initializer
<br />#The Initializer is responsible for processing the Rails configuration, such as setting the $LOAD_PATH, requiring the right frameworks, initializing logging, and more. It can be run either as a single command that‘ll just use the default configuration, like this:<br /><br /> Rails::Initializer.run<br /><br />#But normally it‘s more interesting to pass in a custom configuration through the block running:<br /><br /> Rails::Initializer.run do |config|<br /> config.frameworks -= [ :action_mailer ]<br /> end<br /><br />