def guess_rails_version
unless tracker.options[:rails3] or tracker.options[:rails4]
if @app_tree.exists?("script/rails")
tracker.options[:rails3] = true
Brakeman.notify "[Notice] Detected Rails 3 application"
elsif @app_tree.exists?("app/channels")
tracker.options[:rails3] = true
tracker.options[:rails4] = true
tracker.options[:rails5] = true
Brakeman.notify "[Notice] Detected Rails 5 application"
elsif not @app_tree.exists?("script")
tracker.options[:rails3] = true
tracker.options[:rails4] = true
Brakeman.notify "[Notice] Detected Rails 4 application"
end
end
end