Cloud9 Warning do I just ignore?
<p>During testing in chapter 3 I get the following warning, is this ok to ignore?</p>

<blockquote>
  <p>RubyDep: WARNING: your Ruby is outdated/buggy. Please upgrade. (To disable >warnings, set RUBY_DEP_GEM_SILENCE_WARNINGS=1)
  Run options: --seed 18589</p>
</blockquote>