Use processing version 2 not version 3

[chendaniely]

If you're running into issues with "could not find sketch size" and registerDispose(DisposeHandler). You need to make sure you are using the older version of processing (version 2).

You can check this by going to help > about processing.

There were changes made to processing 3 that break the code in this repository.
See this post on the forms: https://forums.adafruit.com/viewtopic.php?f=47&t=78370

This is just an issue for people who may stumble on this issue in the future. Otherwise, thanks for the code base! Got my first electronics project working! : )