=> Booting Puma
=> Rails 5.0.0.beta3 application starting in development on http://0.0.0.0:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
Exiting
/Users/username/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/fleek-0.1.2/lib/fleek/server.rb:13:in `initialize': uninitialized constant Fleek::Server::Listen (NameError)
any ideas @bouk ?