Merge branch 'dw/signoff-doc' into maint

The documentation has been updated to hint the connection between the '--signoff' option and DCO. * dw/signoff-doc: Expand documentation describing --signoff

Junio C Hamano committed Feb 5, 2016 at 14:54 UTC 7aae9ba6613c38d9f275955af80881fb67ddbd8a

No changes.