Minor flaws in robot-simulator documentation

When doing the robot-simulator exercise, I found that the documentation can be improved in two ways. It turns out that github is closed right now, so I wanted to post this here:

  1. The instructions for Step 1 should document that also Action and Action3 need to be defined to build the module correctly
  2. The examples that describe how to test multiple steps need to be corrected. Instead of go test -tags 'step1 step2' it should say go test -tags step1,step2

Happy to fix this myself, if someone could give guideance how to do this w/o github. Or maybe it is not worth the effort …
Thank you.