fix: Update README to include DCO and license

This commit should also trigger semantic release
to publish a new version to npm with the updated license.

Signed-off-by: Spencer Norman <spencern@gmail.com>

README.md

@@ -61,3 +61,21 @@ When you call `makeOne` or `makeMany`, a full document (including all nested sch
 
 ## Thanks
 Thanks to [@MaxGuitet](https://github.com/MaxGuitet) and the team at [Cambridge Software](https://github.com/CambridgeSoftwareLtd) for their work on [simpl-schema-mockdoc](https://github.com/CambridgeSoftwareLtd/simpl-schema-mockdoc) that heavily influenced this package.
+
+### Developer Certificate of Origin
+We use the [Developer Certificate of Origin (DCO)](https://developercertificate.org/) in lieu of a Contributor License Agreement for all contributions to Reaction Commerce open source projects. We request that contributors agree to the terms of the DCO and indicate that agreement by signing-off all commits made to Reaction Commerce projects by adding a line with your name and email address to every Git commit message contributed:
+```
+Signed-off-by: Jane Doe <jane.doe@example.com>
+```
+
+You can sign-off your commit automatically with Git by using `git commit -s` if you have your `user.name` and `user.email` set as part of your Git configuration.
+
+We ask that you use your real full name (please no anonymous contributions or pseudonyms) and a real email address. By signing-off your commit you are certifying that you have the right to submit it under the [Apache License, Version 2.0](./LICENSE).
+
+We use the [Probot DCO GitHub app](https://github.com/apps/dco) to check for DCO sign-offs of every commit.
+
+If you forget to sign-off your commits, the DCO bot will remind you and give you detailed instructions for how to amend your commits to add a signature.
+
+
+### License
+Data Factory is licensed under the [Apache License, Version 2.0](./LICENSE).