This app is built with cuba, and several other libraries, so do the following to get started.
It doesn't use bundler. It relies on a smaller/simpler solution, privided by the dep gem. If you don't have it installed, please do so.
gem install dep
After that, follow this steps:
dep install # installing dependencies
rake migrate # creates the sqlite3 db on db/development.sqlite3
Start app
foreman start # to start the app using thin, on port 3000