update composer.json as https is fully supported now
update composer.json as https is fully supported now

Signed-off-by: Hongyi Zhang <801ffa52fa9be3884c84e00628dd6041df70800d@gmail.com>

jim-parry/codeigniter-website,xkb/codeigniter-website,jim-parry/codeigniter-website,bcit-ci/codeigniter-website,bcit-ci/codeigniter-website,jim-parry/codeigniter-website,bcit-ci/codeigniter-website,xkb/codeigniter-website