Adding search to the main menu

I want to add a search box or failing that a search icon to the main menu such that it works exactly like it does on the demo. I can not find any tutorial or even mention of “search” anywhere. I though it would be under Appearance -> Menus and search would be a menu item I could add. I am sure this must be simple since it is right there in the demo so it must be I am not doing something right but I can not figure it out. So any help would be greatly appreciated.

I have also tried adding the code below as a menu item and after messing with the CSS for ages I can see the search box albeit in the wrong place but when I do a search none of the returned results can be clicked on.

<form action=”http://www.divisionx.com/wp/&#8221; id=”searchform” method=”get” class=””><div><input type=”submit” value=”” id=”searchsubmit” class=”button avia-font-entypo-fontello” /><input type=”text” id=”s” name=”s” value=”” placeholder=’Search’ /></div></form>