title: How can I add title on seaborn lmplot?
body: <p>I am trying to add title on Searbon lmplot.</p>
  
  <pre><code>ax = plt.axes()
  sns.lmplot(x, y, data=df, hue="hue", ax=ax)
  ax.set_title("Graph (a)")
  plt.show()
  </code></pre>
  
  <p>But I noticed that <code>lmplot</code> does not have an <code>ax</code> parameter.
  How can I add a title on my lmplot?</p>