OK, So I have fresh install of 4 esxi servers installed using the iso for vSAN. I also have the fresh new vCenter server installed using the iso from the vSAN section download.
Now, how do I add a vCenter Server in the web client interface? It's not very intuitive.....lol 
EDIT:
Oh yeah, on the vCenter Server, I just did the "Simple Install", if that makes any difference?