Sinatra is known in the Ruby world for being a lightweight framework for building Ruby web applications with minimal effort. Over time Sinatra has been through many versions, and sometimes it gets complicated keeping track of which versions of Sinatra are compatible with which versions of Ruby. Therefor, we made a handy chart! If you find yourself or your company struggling on an upgrade for either Sinatra or Ruby let us know, our company specializes in upgrades! We have all different packages,...