Who cares if it's not ready to be distributed as a binary to the masses? Who says they even want it to "gain traction"? It's a POC, and an awesome one.
It's a custom, toy browser with Ruby support, not "Ruby in the Browser" (where the implication is that the browser == chrome or firefox or safari).
I'm just trying to clarify that so that people don't get the wrong impression from the misleading title.
Your children one day will laugh at you saying our parents only had javascript in the browser.
Stop thinking about market adoption.