Instructions (1st method):
Make sure you have installed CWM using the guide given above
You will notice that when you will click on Reboot after installing CWM, it will appear if you want to root your device or not
Select “Yes” and continue
When phone will boot up, you will find no SuperSU app in app drawer or any other super user app
Now head over to Play Store and install SuperSU (Free) | SuperSU (Pro – Paid)
As soon as it will be installed, open SuperSU
A popup will appear and tell you that it needs to update SuperSU binaries
Confirm updating binaries
Now again a pop up will appear with two options; Normal | CWM/TWRP
You have to select “Normal”
Now it will automatically update SuperSU binaries
You can verify root access by installing Root Checker App