title: Radio button and custom values in Angular JS
body: <p>To simulate a question where the the user can choose the options listed below or can enter a custom value</p>
  
  <p>Example :  </p>
  
  <pre><code>Which color is your Car ? 
  ( ) RED
  ( ) BLUE
  ( ) BLACK
  (*) OTHER
      ------------------------------------ 
      | GREEN                            |
      ------------------------------------
  </code></pre>
  
  <p>I use something like this : </p>
  
  <p><a href="https://plnkr.co/edit/j8DlGox9SKxVb1fSkZol?p=preview" rel="nofollow">https://plnkr.co/edit/j8DlGox9SKxVb1fSkZol?p=preview</a>
  Need some ideas on how to make the text-box appear only on seletcting others. </p>