Disable Raspberry Pi Screen Blanking

I've come across a couple solutions to disable the screen going to sleep on the Raspberry Pi. There are a few 'xset' commands out there but I found they never worked. Instead I tried this solution:

sudo nano /etc/lightdm/lightdm.conf

In that file, look for:
[SeatDefault]

and insert this line:
xserver-command=X -s 0 dpms