PrestaShop is an open-source e-commerce solution   -  To contribute to our project, you can make pull requests on the development branch. All contributions must respect the norm: http://doc.prestashop.com/x/G4CP   -  If you fix a bug in your pull request, please specify the bug number in your pull request message (eg: #PSCFV-007) -  If you need some help to make a pull-request: https://help.github.com/articles/using-pull-requests