title: Handle special character ( _ ) in Middleman
body: <p>Working on my very first project using Middleman 3.3.3 &amp; ROR4. I have a page where I need to display locally saved images, and please note that I <strong>CAN NOT</strong> modify the file names. </p>
  
  <p>Now the problem I am having is looks like middleman doesn't like file names with underscores ( _ ). Please forgive my limited knowledge, but looks like when I <code>build the site</code>, middleman adds some sorts of random numbers at  the end of the file and displays them. But the files with this special character ( _ ) are left as it is and thus not showing up on the site (locally they are working though).</p>
  
  <p><strong>Here are 2 examples:</strong> </p>
  
  <p><code>&lt;img src="../img/youtube/B7NPBFZ1LB4-60b31c47.jpg"&gt;</code>...successfully adds the random number (-60b31c47) at the end of the name and displays the image </p>
  
  <p><code>&lt;img src="../../img/youtube/_JvAkS3d9No.jpg"&gt;</code>...no random numbers are added, &amp; doesn't display the image</p>
  
  <p>I have all the image/video info in a <strong>YML</strong> file like this...</p>
  
  <pre><code>- tab_title: Blah blah blah...
    headline: Blah blah blah...
    url: 'https://www.youtube.com/watch?v=_JvAkS3d9No'
    guid: '_JvAkS3d9No'
    caption: 'Underwater dogs'
  </code></pre>
  
  <p>I have also tried the followings ways without any success...</p>
  
  <pre><code>guid: "_JvAkS3d9No" 
  guid: "&amp;#95;JvAkS3d9No"
  guid: '&amp;#95;JvAkS3d9No'
  </code></pre>
  
  <p>Can anyone please help me solve this issue? Thank you!!!</p>