title: How to build FAQ knowledgebase app integrated to my rails app
body: <p>I am building a FAQ knowledgebase for my rails application</p>
  
  <ol>
  <li>Contains several topics</li>
  <li>Contains several sub-topics</li>
  <li>Contains questions/answers under each of the above topics</li>
  <li>Ability to add a question</li>
  <li>Search questions by a keyword</li>
  </ol>
  
  <p>Is there a out-of-the-box gem or an app which I can integrate with. I don't want to build a home grown solution and prefer something external</p>