zlsa/atc — pull request #8 by albertyw (2014-12-14 12:16:56+00:00)
Title: Fix confusing wording in tutorial

The tutorial uses the word "arrow" several times to mean several different things - next step, speed up the simulation, and the arrow button on your keyboard. This is a bit confusing. I don't know what can be done without changing the image assets, but hopefully this PR can start it off.

Nice job though.