Search Bar remain on top of the table, while scrolling through cells

[kwstasna]

Hello.
I'm trying to make this example

https://github.com/codepath/ios_guides/wiki/Search-Bar-Guide#using-uisearchcontrollers-ios-8

but i also want to keep it on the top of the table view even if the user is scrolling !

With this line

tableView.tableHeaderView = searchController.searchBar you set it as a Header of the tableView.
Is there any way to make it work as i want it too?
Thanks!