Revision control
++ # How to Contribute
++
++ We'd love to accept your patches and contributions to this project. There are
++ just a few small guidelines you need to follow.
++
++ ## Contributor License Agreement
++
++ Contributions to this project must be accompanied by a Contributor License
++ Agreement. You (or your employer) retain the copyright to your contribution;
++ this simply gives us permission to use and redistribute your contributions as
++ part of the project. Head over to <https://cla.developers.google.com/> to see
++ your current agreements on file or to sign a new one.
++
++ You generally only need to submit a CLA once, so if you've already submitted one
++ (even if it was for a different project), you probably don't need to do it
++ again.
++
++ ## Code reviews
++
++ All submissions, including submissions by project members, require review. We
++ use GitHub pull requests for this purpose. Consult
++ [GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
++ information on using pull requests.
++
++ ## Community Guidelines
++
++ This project follows
++ [Google's Open Source Community Guidelines](https://opensource.google.com/conduct/).