title: Ruby - Convert a string to Date
body: <p>I have a string with the format like</p>
  
  <blockquote>
    <p>"25/04/14",  "12/03/13"  (dd/mm/yy)</p>
  </blockquote>
  
  <p>how to convert it into date format</p>
  
  <blockquote>
    <p>25-04-2014 , 12-03-2013</p>
  </blockquote>
  
  <p>in ruby.</p>