[Documentation] main.py

[rubyFeedback]

Heya there, I think a small typo in the README:

Clone this repository, then:

ruby main.py

I think there is no main.py; main.rb was meant (I think).

Anyway, great screenshots! The comparison makes this fun
aka "good" versus "noob" rendering. ;-)

[Tyler Porter]

Thanks, yeah, I did make a typo there. It's been corrected.