Composer

- instalar o composer
- via cmd entrar na pasta de projetos web
- composer create-project bcit-ci/codeigniter meu_projeto --prefer-dist
- alterar o auto load para true

$config['composer_autoload'] = TRUE;

para instalar o pagseguro
composer require pagseguro/pagseguro-php-sdk

bootstrap
composer require twbs/bootstrap

jquery
composer require components/jquery

font-awesome
composer require components/font-awesome

fancybox
composer require fancyapps/fancybox