title: create json object from string with ruby
body: <p>I am really new about Ruby development. I am trying to create a json file with strings. My json file like below. Can you help to me</p>
  
  <pre><code>{
      "App":{
          "properties":{"color":"red"},
          "screens":[
                  {"id":"page1", "properties":{"color":"red"}, "elements":[
                                                  {"type":"txtbox", "properties":{"color":"red"}}, 
                                                  {"type":"button", "properties":{"color":"red"}}
                                                  ]
                  },
                  {"id":"page2", "properties":{"color":"red"}, "elements":[
                                                  {"type":"txtbox", "properties":{"color":"red"}}, 
                                                  {"type":"button", "properties":{"color":"red"}}
                                                  ]
                  }
          ]
      }
  }
  </code></pre>