[Q] What files I need to root 5.1.1?

Hey guys I just bought a Nexus 6 yesterday and once I got it updated to 5.1.1 LYZ28E, and I'm trying to root my device at first I was going to use cf auto root but I noticed it was for 5.0 only so can someone tell me what files I need exactly and what would be the easiest way to root? Thanks in advance