You can sign in with your GitHub account and configure which projects are build automatically each time you push your code to GitHub.
Do not want to sign in? No problem! You can configure your hook manually via the GitHub settings of each project.
Go to the Settings page of your repository:
Select the Webhooks and Services submenu:
Click the Add webhook button ...
... and use https://inch-ci.org/rebuild as Payload URL:
Click Add webhook and you are good to go!