Scott has been busy building Anroid Lollipop 5.0 for the Nexus 7. He has updated his build to include full Root. This is a PURE AOSP rom that is flashable via recovery. This has to be the easiest way to update the Nexus 7 2013 to Android 5.0 especially if you are a rom user and you already have a custom recovery installed. It should be noted that not even Google has released an official build of Lollipop for the Nexus 7 2013 so its pretty awesome to see the dev community making this update available to us. Head to the link below for the download and full install instructions.
Via XDA