Only Contributors currently have the owner rights can merge the code or functionality provided by you.
The changes should be developed in your own fork and based on branches. When you have finished your work you create a PR (pull request) on Github.
Fork the project on Github and clone your own repository to your machine. Open the README.md file on any code editor of your choice or any editor that supports markdown.
Please follow these instructions so that the changes that you provide can be easily added to the repository and your work can be acknowledged accordingly.