title: Shiny renderTable with commas
body: <p>In my shiny package, I have the following code:</p>
  
  <pre><code>output$growthTable &lt;- renderTable({
    table &lt;- makeTable()
    colnames(table) &lt;- c("Year","BOY Balance", "Yearly Growth", "EOY Contribution", "EOY Balance")
    return(table)
  }, include.rownames = FALSE)
  </code></pre>
  
  <p>How can I make the last 4 columns have commas in them. So for instance <code>10000</code> becomes <code>10,000</code>? </p>