To work on a repository you need to fork it.
Figure: Fork a GitHub repository
Figure: Repository URL to be used for cloning
Figure: Cloning a GitHub repository to your local Git Repository
Figure: Configuring your GitHub user name and email address
Figure: Enter your GitHub user name and email address
Figure: When prompted use your email address to connect to your GitHub Account
Up until now, all the changes you have made has been to your local and the remote repository that was forked from the SSW repository. To have your changes merged you need to submit a Pull request.
Figure: Go to Pull requests tab
Figure: Create a new pull request
Figure: Verify changes that will be included in the pull request
Figure: Enter a comment and click Create pull request to create the new request