DCO

##  Sign your work - the Developer's Certificate of Origin

The sign-off is a simple line at the end of the explanation for the patch, which certifies that you wrote it or otherwise have the right to pass it on as an open-source patch. The rules are pretty simple: if you can certify the below (from developercertificate.org):

> Developer's Certificate of Origin 1.1
>
> By making a contribution to this project, I certify that:
>
> (a) The contribution was created in whole or in part by me and I
>     have the right to submit it under the open source license
>     indicated in the file; or
>
> (b) The contribution is based upon previous work that, to the best
>     of my knowledge, is covered under an appropriate open source
>     license and I have the right under that license to submit that
>     work with modifications, whether created in whole or in part
>     by me, under the same open source license (unless I am
>     permitted to submit under a different license), as indicated
>     in the file; or
>
> (c) The contribution was provided directly to me by some other
>     person who certified (a), (b) or (c) and I have not modified
>     it.
>
> (d) I understand and agree that this project and the contribution
>     are public and that a record of the contribution (including all
>     personal information I submit with it, including my sign-off) is
>     maintained indefinitely and may be redistributed consistent with
>     this project or the open source license(s) involved.

#### DCO Sign-Off Methods

The DCO requires a sign-off message in the following format appear on each commit in the pull request:

> Signed-off-by: Random J Developer <random@developer.example.org>

using your real name (sorry, no pseudonyms or anonymous contributions.)

The DCO text can either be manually added to your commit body, or you can add either **-s** or **--signoff** to your usual git commit commands. If you forget to add the sign-off you can also amend a previous commit with the sign-off by running **git commit --amend -s**. If you've pushed your changes to Github already you'll need to force push your branch after this with **git push -f**.