Add convenience method for delayed Rails startup logging #4

Logging early in the Rails startup sequence (e.g. in application.rb or in one of the files under config/environments) can fail due to the logger not being initialized. In this situation the workaround is to wrap the call to the logger in a config.after_initialize block:

config.after_initialize do
  Rails.logger.info('msg', obj)
end

It would be nice to have a convenience object or set of convenience methods that would DRY this and keep the complexity out of the config/initialization files.