title: R Shiny: Present a ShinyBS Modal Popup on page visit (no user action)
body: <p>I used bsModal successfully in my code before. However, I can't seem to get a modal pop up to show just when the user visits an app's first page by default. I thought something like this would work, but not. Any idea how I can trigger a bsModal on page visit?</p>
  
  <pre><code>library(shiny)
  library(shinyBS)
  
  ui &lt;- fluidPage(
    mainPanel(
      bsModal(id = 'startupModal', title = 'Dum Dum', trigger = '',
              size = 'large', p("here is my mumbo jumbo")),
      width = 12
    )
  )
  
  server &lt;- function(input, output, session) {
  
  }
  
  shinyApp(ui = ui, server = server)
  </code></pre>
  
  <p>I simply need to alert the user with a message when they visit the app and then allow them to close the modal pop up and navigate the rest of the app freely. I am using Shinydashboard. So, eventually, this has to work with that.</p>