Add images OF (not TO) the demo!

[wqferr]

I stumbled upon this repo from the love2d wiki and I have no idea what it looks like, but the code I found on main.lua looks really neat!

Obviously I can clone the repo and run the demo myself, but a lot of people won't. It could really boost your discoverability.

[linux-man]

Hi! The best way to get a taste of loveframes is to download "loveframes-demo.love" from the last release an run with with love.