title: Plus-minus symbol of toggle for jquery accordion
body: <p>I want to add plus-minus symbol to my query accordion while toggling.
  The symbol should be plus when collapsed and minus when expanded. I tried searching on various posts,but I am not able to find it. I have no idea of jquery at all. Any help will be appreciated. You can find the working code on this link:</p>
  
  <p><a href="http://www.bootply.com/X3tSn83qU1" rel="nofollow">http://www.bootply.com/X3tSn83qU1</a></p>