Marquee is a command-line Node.js app that creates back-dated Git commits in order to write a message on your GitHub contibution summary graph.
npm install github-marquee
Writing a marquee message to your GitHub contribution summary graph is done in a few steps.
Step 1: Create a New Directory
Marquee is designed to work on a brand new repository. Because we are manipulating history, it is a really bad idea to use this on an existing repository.
$ mkdir hi-there
Step 2: Create Commit Messages
Open up your terminal and use the following syntax to create a commit history that maps to your message.
$ marquee <message>
Step 3: Create a Public GitHub Repository
Marquee only creates a contribution history, it does not interface directly with GitHub. After you've set up your commits, head over to https://github.com/new and create a new repository.
Be sure to leave "Initialize this repository with a README" unchecked, and do not add a license or .gitignore.
Step 4: Push Your New Repository
After creating your repository, follow the GitHub instructions to "push an existing repository from the command line." After pushing your repository, your GitHub contribution summary graph will be updated immediately.