Want to contribute? Great! First, read this page (including the small print at

the end).

### Before you contribute

Before we can use your code, you must sign the

[Google Individual Contributor License Agreement]

(https://cla.developers.google.com/about/google-individual)

(CLA), which you can do online. The CLA is necessary mainly because you own the

copyright to your changes, even after your contribution becomes part of our

codebase, so we need your permission to use and distribute your code. We also

need to be sure of various other things—for instance that you'll tell us if you

know that your code infringes on other people's patents. You don't have to sign

the CLA until after you've submitted your code for review and a member has

approved it, but you must do it before we can put your code into our codebase.

Before you start working on a larger contribution, you should get in touch with

us first through the issue tracker with your idea so that we can help out and

possibly guide you. Coordinating up front makes it much easier to avoid

frustration later on.

### Code reviews

All submissions, including submissions by project members, require review. We

use Github pull requests for this purpose.

### The small print

Contributions made by corporations are covered by a different agreement than

the one above, the [Software Grant and Corporate Contributor License Agreement]

(https://cla.developers.google.com/about/google-corporate).