Original Source: https://github.blog/2016-06-16-pin-repositories-to-your-github-profile/
You can now show on GitHub repository home page that best represents your work.
Use the "fixed warehouse" list, you can fix any common repository for your contribution.
Once you've selected up to five storage library, you can drag and drop to place them in your preferred order.
If you do not fix the custom warehouse, we will continue to show you the most popular warehouse.
Combine your home page resume, fixed on your warehouse, allowing GitHub to be the best showcase your work and history. We're glad you can use a fixed warehouse functions.