kpabe wrapped in maven project

Original project: https://github.com/LiangZhang716/kpabe

Fixed:

• Maven dependencies
• Serilization issues (as mentioned in LiangZhang716/kpabe#1)
• Removed hardcoded paths in the code
• Added the posibility for more expressive policies.

How to setup

• Import this repo into your IDE, import as a Maven project.
• Open Example.java and change the folder to the location of where you put the project.
• Run the main method in Example.java.
• View the output in /example/ of the project folder.

Todo

• Cleanup code