doc: create a GitHub release for each tag

Fixes: #12
PR-URL: #14
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>

README.md

@@ -31,4 +31,6 @@ etc. You can verify that this step worked by checking
 `.tar.gz.sign` files.
 6. Create a "Now working on" commit in libuv/libuv. An example can be seen
 [here](https://github.com/libuv/libuv/commit/07955ed3737cc59bc4d586b34222669ca87de755).
-7. Make a pull request to nodejs/node to update the version of libuv.
+7. Create a new release on Github for the tag at
+<https://github.com/libuv/libuv/releases/new>.
+8. Make a pull request to nodejs/node to update the version of libuv.