title: Convert array of strings to joined strings
body: <p>Input: </p>
  
  <pre><code> array = ['A', 'B', 'C']
  </code></pre>
  
  <p>Desired output: </p>
  
  <pre><code>'A', 'B', 'C'
  </code></pre>
  
  <p>I'm using <a href="https://github.com/tpitale/legato" rel="nofollow">legato</a> gem to chain google analytics filters. My method call looks like this:</p>
  
  <pre><code>response = KeywordRevenueData.results(profile, self.options).for_keywords(array)
  </code></pre>
  
  <p>I thought this would work, </p>
  
  <pre><code>array.map(&amp;:inspect).join(", ")
  </code></pre>
  
  <p>but for some reason it doesn't.</p>
  
  <p><strong>EDIT:</strong>
  It works fine when I put the literal strings in the method call:</p>
  
  <pre><code>response = KeywordRevenueData.results(profile, self.options).for_keywords("A", "B", "C")
  </code></pre>
  
  <p>single or double quotes seem to work fine if they are literals in the method call</p>