Count all div elements and add each number inside span using jQuery

Count all div elements and add each number inside span using jQuery

I need to show each number of div in the page in order
And add the value of each div inside span
so if I have 4 divs inside page like this
<div>first div</div>
<div>second div</div>
<div>third div</div>
every div need to show his order and be like this
<div>first div <span>1</span></div>
<div>second div <span>2</span></div>
<div>third div <span>3</span></div>
This html example code in jsfiddle
http://jsfiddle.net/CtDLe/
I need the output to be like this using jQuery
http://jsfiddle.net/CtDLe/1/