How to One Click Unlock Bootloader + Root Google Nexus 5 [CF-Auto-Root]

Rooting your Nexus 5 phone by CF-Auto-Root method is the quickest and easiest way for gaining full root permissions on the device.
CF-Auto-Root does not include a custom kernel, it will keep your nexus 5 as close to stock as possible with root access.

Requirements :

Google nexus 5
Extracted CF-Auto-Root file.
Installed Google USB driver.
Windows PC.

Steps :

Backup all data before starting rooting process, it will wipe all your data.
Turn off your nexus 5 and put it into fastboot mode (power + vol down) buttons.
Double click "root-windows.bat" for windows and press any key on your computer's keyboard to continue.
Connect your device to PC via USB cable (wait until your PC detect it).
Press vol up to choose "unlock bootloader", then power button to confirm.
Your nexus 5 will erase the data, then reboot into a screen which display a red Android logo.
Wait a few minutes until your device finish configuration.
You will see SuperSU app in your device app drawer

Done !

YT video link : http://www.youtube.com/watch?v=GAbSbobwX6s

Notes :

This process will void your device's warranty
CF-Auto-Root method will unlock bootloader, install SuperSU and binary, NO custom recovery.
Use it at your own risk
Credit goes to "chainfire" cf-auto-root developer, main thread.