I like it but upgrading ruby to the required 2.3 from 1.9 that comes with Ubuntu 14.04 turned out to be a daunting process. The 2.3 build was at least 15 min with several errors, and then bundler wouldn't work. I wiped everything ruby and will try again with RVM. It seems like over kill for such a simple app. I am not a RoR guy and my first impression is not very good compared to other server apps I've installed, or maybe I just need more patience!
This worked! Just a couple of problems. Hashrocket needs dev version of Ruby and pg wouldn't build, but StackOverflow told me I needed to install libpq-dev. Then I had to install postgres, but wasn't hard.