OSX el capitan && Ubuntu gnome dual boot setup

Yo. I'm trying to setup a dual boot between OSX 10.11.6 and Ubuntu Gnome Linux 16.04 at the moment.
I have both installed currently. Ii can't find anything on how to setup the bootloaders and frankly i don't even know what OSX uses for one.
Does anyone else do a linux / osx dual boot? is it worth doing?

Here you go M8

TLDR, you'll need rEFInd installed to use as your boot manager

I used to have a mac dual booted, but was a pain in the arse. better to just use vmware/virtualbox.