title: Rails 5: Array values in the parameter to `Gem.paths=` are deprecated
body: <p>Building websockets app based off of actioncable-examples.  When starting server, running rake, etc.  I keep getting the message:</p>
  
  <pre><code>Array values in the parameter to `Gem.paths=` are deprecated.
  </code></pre>
  
  <p>Haven't seen a solution here, but did find one.  I wanted to post the question and answer here so that it's available.</p>