rename to rswag plus major refactor - almost a rewrite

test-app/app/controllers/application_controller.rb

@@ -0,0 +1,7 @@
+class ApplicationController < ActionController::Base
+  # Prevent CSRF attacks by raising an exception.
+  # For APIs, you may want to use :null_session instead.
+  protect_from_forgery with: :exception
+
+  wrap_parameters format: [ :json ]
+end