Essential Packages

You should install the atom-k9 package (to run watch sketches from the editor).

You may also want the set-syntax package to make it easy to select the JRubyArt syntax mode.

Note: You can easily edit language-jruby-art.cson to create custom snippets see extract below:-

      '.source.ruby.processing':
        Background:
        prefix: 'bkg'
        body: 'background ${1:int}'