The packages inside this folder are the new combined zip format, you can both flash it in recovery AND unpack it on your computer to install it using the install.sh (for Linux/Mac OS X) or install.bat (for windows) files.
This zip file contains a root exploit. As such, some Anti-Virus programs will trip over the download and deny you access to the file (ESET NOD32 among others). If and when you can not access the file or the zip seems to be corrupted, disable the A/V software for a few minutes and try again!
Unlocked Bootloader users: Stock on UB, CyanogenMod, AOSP and OmniRom
Use the Kernel Builder to repack the kernel you are using now to replace the built in recovery with XZDualRecovery. Installing the locked bootloader variant will either not work at all or require unexpected operating instructions.