Added JUNG implementation. JUNG = Java Universal Networking and Graph library. This will allow for (1) easy visualizations of graphs, and (2) advanced graph operations we would have been able to perform unless we explicitly wrote the code for it.

I think the visualization side of things is working, but we need to first construct the graph. This can be done another time.

Also, if we do decide to continue using JUNG, we need to import it in all our projects.

Signed-off-by: cauth0n <derek.reimanis@gmail.com>