Processing 3 Update

[neilpanchal]

It'd be cool to update with the latest Processing 3 framework. I was reading about the new changes and looks like it should be an easy fix (but I can't seem to make it work).

More details on the Processing 2 to 3 changes for PApplet class can be found here:
https://stackoverflow.com/questions/36565159/adding-processing-3-to-a-jpanel

The specific line that is creating the issue is the "frame.add(BorderLayout().CENTER, engine)" in the ProcessingViewer.java