JRubyArt is a wrapper for processing-3.0 (currently at beta2 release)
which uses jruby-9.0.0.0 as the glue between ruby and processing.
Features a simple run mode, a watch mode (reloads running sketch when
files are changed) and live mode using pry. The pry mode works best with
explicitly class wrapped sketches. The run and watch modes run equally
well as bare sketches like regular processing the sketch is wrapped as a
class at runtime.