This Function make your shiny app to an executable file Go to your project directory(Including app.R), and run this function.
Arguments
- app_name
- Name of your application. Default will be "myapp". 
- electron_settings
- A list including package.json settings. Including product_name, app_version, app_description, author_name, author_email, repository_url 
- option
- A list containing option for packing. See option_description.md for details. 
Examples
if (interactive()) {
  # Needs at least 1 minute.
  pack(
    app_name = "myapp",
    electron_settings = list(
      c("product_name_template", "My Own Product Name"),
      c("app_description_template", "App Description"),
      c("author_name_template", "Author Name"),
      c("author_email_template", "Author E-mail"),
      c("repository_url_template", "Repository URL")
    ),
    option = list()
  )
}