title: Facet function in highcharts
body: <p>I have a data like this example:</p>
  
  <pre><code>df &lt;-
    data.frame(
      date = seq(as.Date("2015-01-01"), as.Date("2015-12-31"), 100),
      id = rep(LETTERS, each = 4)[1:100],
      replicate(2, sample(1001, 100))
    )
  </code></pre>
  
  <p>Plotting with ggplot is Ok</p>
  
  <pre><code>ggplot(df, aes(x = date)) +
    geom_line(aes(y = X1)) +
    geom_line(aes(y = X2), linetype = 2) +
    facet_wrap( ~ id , scales = "free") 
  </code></pre>
  
  <p>I found some info about facet implementation in highchart
  <a href="http://rpubs.com/jbkunst/higcharter-grid-test" rel="noreferrer">higcharter-grid-test</a>
  and I tried to plot it with highchart in order to make an interactive plot, but <code>highchart::hw_grid()</code> and <code>browsable()</code> are deprecated. Can anybody help me with ploting my data?</p>
  
  <p>My snippet :</p>
  
  <pre><code>  highchart() %&gt;% 
      hc_add_series(name = "X1", data = df$X1) %&gt;% 
      hc_add_series(name = "X2", data = df$X2) %&gt;% 
      hw_grid(id, rowheight = 200, ncol = 3)
  </code></pre>