doc: clarify contribution A+C changes
@@ -68,8 +68,7 @@ If it is large, such as suggesting a new repository, sub-repository, or interfac
### Your First Code Contribution
-If you are a new contributor, thank you! Before your first merge, you will need to be added to the [CONTRIBUTORS](https://github.com/gonum/gonum/blob/master/CONTRIBUTORS) and [AUTHORS](https://github.com/gonum/gonum/blob/master/AUTHORS) file.
-Open a pull request adding yourself to them.
+If you are a new contributor, thank you! Before your first merge, you will need to be added to the [CONTRIBUTORS](https://github.com/gonum/gonum/blob/master/CONTRIBUTORS) and [AUTHORS](https://github.com/gonum/gonum/blob/master/AUTHORS) file; after your contribution has been accepted you will be asked to open a pull request adding yourself to them.
All Gonum code follows the BSD license in the [license document](https://github.com/gonum/gonum/blob/master/LICENSE).
We prefer that code contributions do not come with additional licensing.
For exceptions, added code must also follow a BSD license.
