title: What is a "cURL" and how do I execute it?
body: <p>I've been trying to make a Lyrebird application work. Mind that I only have basic javascript/php knowledge and have never done this so I tried implementing a cURL request noted on: "<a href="http://docs.lyrebird.ai" rel="nofollow noreferrer">http://docs.lyrebird.ai</a>". Needlessly to say that it doesn't work in javascript as well as PHP (even though I looked up on how to do it?)</p>
  
  <p>I only need to run this example (the details are fake):</p>
  
  <pre><code># Request #
  
  curl -H 'Content-Type: application/json'
  'https://avatar.lyrebird.ai/api/v0/token' -d
  '{
      "grant_type": "authorization_code",
      "client_id": "19qV2jZy1G44ifOxk6kgowAt9F0",
      "client_secret": "19qnfRvIXdmQKhSbLG0CLxng5Mz",
      "code": "19qozJe3hwnPvfl5xyNuR3MJ1NK"
  }'
  
  # expected Response #
  {
      "access_token": "18QdNlaDvkzMbgQ5SXmKNGmexWo"
  }
  </code></pre>
  
  <p>How do I run the request (programming language?) in a way I get the "Expected Response" noted in the example?</p>