#14 Clarify kwalify-java license

[Everett Anderrson]

Kwalify seems like a nice YAML schema validation system. This isn't high priority, but I notice that on

http://www.kuwata-lab.com/kwalify/

the license is listed as the MIT License. However, in the actual kwalify-java 0.5.1 distribution archives on

https://sourceforge.net/projects/kwalify/files/kwalify-java/0.5.1/

it's GPL v2. Is that a disparity or is the kwalify-java license different for a reason?