EvoJ 2 is distributed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License. The full legal code of the license can be found here: http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode
In short you have following rights:
- to use EvoJ framework for non-commercial purposes
- to distribute your projects using EvoJ as long as you distribute them under the same license and provide reference to EvoJ
In case you need additional permissions please contact the author.