Processing based 3d pointcloud & persistence barcode/diagram visualization

I have written a 3D visualizer for javaplex based on the existing processing sketch. I have added my changes to the visualization package. 

![hom_viz_sphere](https://cloud.githubusercontent.com/assets/1042141/2795415/4a691d60-cbfa-11e3-9a87-4ac5fecc36a0.png)

I have also added the Processing core.jar to the lib folder and several point cloud examples to the data folder. There is a new ant task in build.xml, that builds a java application, which can be run from command line by "java -jar homviz" 

My code is a little messy, sorry. Hope you enjoy it :). 

Jacobien