title: Read in multiple values in R shiny textInput
body: <p>Is it possible to read in multiple values in textInput in R shiny? Look at a simple example below.  I want to be able to produce a sum (or another R function) on the user entering valueS.  Can a user enter: 1, 2, 3, 4 and the see the sum of these numbers below? </p>
  
  <pre><code>shinyUI(fluidPage(
  
    # Copy the line below to make a text input box
    textInput("text", label = h3("Text input"), value = "Enter text..."),
  
    hr(),
    fluidRow(column(3, verbatimTextOutput("value")))
  
  ))
  
  
  
  
  shinyServer(function(input, output) {
  
    # You can access the value of the widget with input$text, e.g.
    output$value &lt;- renderPrint({ input$text })
  
  })
  </code></pre>