This project is a simple exercise to test Geoloc stuff
This application use Sinatra DSL You can find more infos here, http://sinatra-book.gittr.com/
https://www.mapbox.com/showcase/
exemple http://bl.ocks.org/NelsonMinar/5851197
https://devcenter.heroku.com/articles/deploying-rails-applications-with-the-puma-web-server http://blog.codeship.io/2013/10/16/unleash-the-puma-on-heroku.html