def deploy!(app, settings=[])
      @beanstalk.update_environment({
        version_label: app.version,
        environment_name: self.name,
        option_settings: settings
      })
    end
def deploy!(app, settings=[])
      @beanstalk.update_environment({
        version_label: app.version,
        environment_name: self.name,
        option_settings: settings
      })
    end
Assuming the provided app has already been uploaded,
 update this environment to the app's version
 Optionally pass in a bunch of settings to override