Docs: add description on how to retrieve artifacts when authentication is required
Docs: add description on how to retrieve artifacts when authentication is required

iiet/iiet-git,mmkassem/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,iiet/iiet-git,iiet/iiet-git,stoplightio/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq