Update README.md and add hello world app

README.md

@@ -10,11 +10,12 @@ Check out our [examples](/examples) to understand how the library creates Rails
 
 See some examples of how the UniRails library can be used
 
--  [Todos app (JSON API)](/examples/json_api.rb)
--  [Todos app (Rails scaffold)](/examples/todos.rb) based off `bin/rails g scaffold todo name completed_at:datetime`
--  [Todos app (Hotwire)](/examples/hotwire.rb) based off online article: [turbo-rails-101-todo-list](https://www.colby.so/posts/turbo-rails-101-todo-list) by David Colby
--  [App using Puma server](/examples/server_puma.rb) 
--  [App using Falcon server](/examples/server_falcon.rb)
+-  [Hello world](/examples/hello-world.rb)
+-  [Todos app (JSON API)](/examples/todos-api.rb)
+-  [Todos app (Rails scaffold)](/examples/todos-scaffold.rb) based off `bin/rails g scaffold todo name completed_at:datetime`
+-  [Todos app (Hotwire)](/examples/todos-hotwire.rb) based off online article: [turbo-rails-101-todo-list](https://www.colby.so/posts/turbo-rails-101-todo-list) by David Colby
+-  [App using Puma server](/examples/server-puma-app.rb) 
+-  [App using Falcon server](/examples/server-falcon-app.rb)
 
 ## Development
 

examples/hello-world.rb

@@ -0,0 +1,25 @@
+# Run the application
+#   $ ruby hello-world.rb
+
+ENV['SECRET_KEY_BASE'] = 'my_secret_key_base'
+
+require "bundler/inline"
+
+gemfile(true) do
+  source "https://rubygems.org"
+  gem 'uni_rails'
+end
+
+require 'uni_rails'
+
+UniRails::App.routes.append do
+  root 'pages#index'
+end
+
+class PagesController < ActionController::Base
+  def index
+    render plain: 'Hello world'
+  end
+end
+
+UniRails.run(Port: 3000)