Instalando uma debugbar no CodeIgniter - composer.json

composer.json

{
	"description": "The CodeIgniter framework",
	"name": "codeigniter/framework",
	"type": "project",
	"homepage": "https://codeigniter.com",
	"license": "MIT",
	"support": {
		"forum": "http://forum.codeigniter.com/",
		"wiki": "https://github.com/bcit-ci/CodeIgniter/wiki",
		"irc": "irc://irc.freenode.net/codeigniter",
		"source": "https://github.com/bcit-ci/CodeIgniter"
	},
	"require": {
		"php": ">=5.5",
		"tan5en5/codeigniter-debugbar": "dev-master"
	}
}