Typo: in https://github.com/copiousfreetime/launchy/blob/master/lib/launchy/detect/ruby_engine.rb#L18

[rubyFeedback]

def self.ruby_engine_error_message( ruby_engine )
      msg = "Unkonwn RUBY_ENGINE "

Should be: "Unknown" instead.

Can be found in ruby_engine.rb aka:

https://github.com/copiousfreetime/launchy/blob/master/lib/launchy/detect/ruby_engine.rb#L18