Add RosarioSIS

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``- [Name](http://homepage/) - Short description, less than 250 characters. ([Demo](http://url.to/demo), [Source Code](http://url.of/source/code), [Clients](https://url.to/list/of/related/clients-or-apps)) `License` `Language` ``

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README.md

@@ -820,6 +820,7 @@ _Command-line file upload_
 - [Moodle](https://moodle.org/) - Moodle is a learning and courses platform with one of the largest open source communities worldwide. ([Demo](https://moodle.org/demo/), [Source Code](https://git.moodle.org/gw)) `GPL-3.0` `PHP`
 - [Open eClass](http://www.openeclass.org/) - Open eClass is an advanced e-learning solution that can enhance the teaching and learning process. ([Demo](http://demo.openeclass.org/), [Source Code](https://github.com/gunet/openeclass)) `GPL-2.0` `PHP`
 - [RELATE](https://documen.tician.de/relate/) - RELATE is a web-based courseware package, includes features such as: flexible rules, statistics, multi-course support, class calendar. ([Source Code](https://github.com/inducer/relate/)) `MIT` `Python`
+- [RosarioSIS](https://www.rosariosis.org/) - RosarioSIS, free Student Information System for school management. ([Demo](https://www.rosariosis.org/demo/), [Source Code](https://gitlab.com/francoisjacquet/rosariosis/)) `GPL-2.0` `PHP`
 - [Sakai](https://www.sakaiproject.org/) - The Sakai project provides a flexible and feature-rich environment for teaching, learning, research and other collaboration. ([Demo](https://www.sakaiproject.org/try-sakai), [Source Code](https://github.com/sakaiproject/sakai)) `ECL-2.0` `Java`
 - [SchoolTool](http://schooltool.org/) - SchoolTool is free administrative software for schools. It includes demographics, gradebook, attendance, calendaring, reporting and more for primary and secondary schools. ([Source Code](http://bazaar.launchpad.net/~schooltool-owners/schooltool/2.8/files)) `GPL-2.0` `Python`