title: What is a *.PODSPEC file?
body: <p>I'm an iOS developer and I am really interested in all about PODSPEC file:</p>
  
  <ol>
  <li>What is it used for?</li>
  <li>Why do we need it?</li>
  <li>What is it helpful for?</li>
  </ol>
  
  <p>Thanks a lot guys.</p>
  
  <p>Hope in this question we will collect enough info, cause I have not found a thing about it.</p>