Update README.md

Author: polo2ro

README.md

@@ -55,6 +55,7 @@ for a curated list of packages and resources.
 ## Business
 
 * [TimeOff Management](https://github.com/timeoff-management/application) ([website](http://timeoff.management/)) - Simple yet powerful absence management software for small and medium size business.
+* [Gadael](https://github.com/gadael/gadael) ([website](http://www.gadael.org)) Leave management software with french work regulations support.
 * [Basic Hospital Information Management Application](https://github.com/IMA-WorldHealth/bhima-2.X) ([website](https://bhi.ma/)) - Hospital management suite for the developing world.
 
 ## Science