title: which rails voting system gem has the following features?
body: <p>Which rails voting system plugin or gem that has the following features</p>
  
  <ul>
  <li><p>vote up &amp;down</p></li>
  <li><p>Ability to show net number of votes</p></li>
  <li>vote for all objects in the model (But only once per object per user)</li>
  <li>list all objects in the model by higher number of votes</li>
  <li>Not to vote on your own object</li>
  </ul>
  
  <p>I have looked at <a href="https://github.com/brady8/thumbs_up" rel="noreferrer">thumbs up</a>  gem,but its not stating clearly,i might be wrong (if i am wrong please correct me).Also i need to know if it is possible to customize thumbs up gem?Thank you in advance</p>