Towelroot is a root method that will root your Android device with one tap. However, it will root devices running on KitKat or lower. Nearly half of the devices run on KitKat or lower and most of the devices are supported by Towelroot. Try it once if you are looking for the root. It will root in seconds. Download it from below.
Remember to install SuperSU that will grant root access to Apps:
Check out the video for detailed information from here.