adding some helpful sublime settings to contribute.md
adding some helpful sublime settings to contribute.md

cristianmejia/upmin-admin-ruby,cristianmejia/upmin-admin-ruby,ebakan/upmin-admin-ruby,braindeaf/upmin-admin-ruby,cristianmejia/upmin-admin-ruby,ebakan/upmin-admin-ruby,braindeaf/upmin-admin-ruby,upmin/upmin-admin-ruby,acrogenesis-lab/upmin-admin-ruby,braindeaf/upmin-admin-ruby,ebakan/upmin-admin-ruby,upmin/upmin-admin-ruby,upmin/upmin-admin-ruby,acrogenesis-lab/upmin-admin-ruby