Marvel install failure to download out of all possible locations

I have found your documentation confusing and contradictory. I already work in a really sloppy area of CS. This is not helping. I am trying to follow your starter info off the splash page. Which is not correct. I found what is supposed to be the correct info for elasticsearch 2.1.0. Please advise. -Tom

So you are reading -

What specific problems are you running into?

I think I was missing the dash prior to the agent. Thanks,