Update installation from source guide
Update installation from source guide

dreampet/gitlab,stoplightio/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,iiet/iiet-git,stoplightio/gitlabhq,axilleas/gitlabhq,axilleas/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq,axilleas/gitlabhq,mmkassem/gitlabhq,dreampet/gitlab,iiet/iiet-git,mmkassem/gitlabhq,dreampet/gitlab,stoplightio/gitlabhq,iiet/iiet-git,iiet/iiet-git,stoplightio/gitlabhq