Simple way To Root Your Android Phone

1. Download vroot here
2. Enable usb debugging on your android smartphone. To enable usb debugging, Open settings--developer options--usb debugging-- touch to enable. Developer options is hidden for android 4.2.2 or above. In order to unhide go to settings --- about phone --- built number (tap on it 5-8 times)
3. Once root app is installed on your computer, open it
4. Once root app is launched connect your android phone to your computer
5. When connected successfully vroot will automatically detect your phone
6. Now, click on the root button to begin the rooting process. 
7. Vroot will automatically reboot your phone and install the supersu application.
8. You can also verify that your phone has been successfully rooted with the root checker application.

As simple as ABC, isn't it?