title: Defining an array as an environment variable in node.js
body: <p>I have an array that I pull data from. </p>
  
  <pre><code>festivals = ['bonnaroo', 'lollapalooza', 'coachella']
  </code></pre>
  
  <p>Since I'm using heroku, it may be better to replace it with an environment variable, but I'm not sure how to do that.</p>
  
  <p><strong>Is using a JSON string as an environment variable the way to go?</strong></p>