title: How do I get multiple subplot in rcharts?
body: <p>I have two lines as code below need layout in two row, how to do it in rcharts?</p>
  
  <pre><code>h1 &lt;- Highcharts$new()
  h1$chart(type = "line")
  h1$series(data = c(1, 3, 2, 4, 5, 4, 6, 2, 3, 5, NA), dashStyle = "longdash")
  h1$series(data = c(NA, 4, 1, 3, 4, 2, 9, 1, 2, 3, 4), dashStyle = "shortdot")
  h1$legend(symbolWidth = 80)
  h1
  </code></pre>
  
  <p><a href="http://i.stack.imgur.com/cWIHn.png" rel="nofollow">enter image description here</a></p>