title: Read and Update into JSON file in main app bundle
body: <p>I have a JSON file witch copied locally into xcode which I can read it through the main bundle.
  But then I have problem update this JSON file because everytime i write into a new JSON file create in app document folder.</p>
  
  <p>Here are the sample JSON file </p>
  
  <pre><code>[
  {
      "id": "5c8a80f52dfee238898d64cf",
      "firstName": "Phoebe",
      "lastName": "Monroe",
      "email": "phoebemonroe@furnafix.com",
      "phone": "(903) 553-3410"
  },
  {
      "id": "5c8a80f575270ddb54a18f86",
      "firstName": "Lidia",
      "lastName": "Wilkins",
      "email": "lidiawilkins@furnafix.com",
      "phone": "(997) 482-3866"
  }
  ]
  </code></pre>
  
  <p>Here are the code which I update the JSON file</p>
  
  <pre><code>  let mainUrl = Bundle.main.url(forResource: "data", withExtension: ".json")!
  
      let json = JSON(contact)
      let hello = json.arrayObject
      let str = hello?.description
      let data = str!.data(using: String.Encoding.utf8)!
      do{
      try data.write(to: mainUrl, options: [])
          } catch {
                  print(error)
  }
  }
  </code></pre>