I have Magento 2.1.4 CE installed. I have browsed the devdocs and forums on upgrading and I am confused.
What commands do I have to run exactly to do the upgrade? When I try to run
composer require magento/product-community-edition 2.1.7 --no-update
it asks for username/and pass but I do not have one. I downloaded the 2.1.4 archive from Magento docs.