title: Plotting 2 seaborn KDE joint plots in the same row
body: <p>Is there a way to plot two KDE joint plots side by side? I have been able to display almost everyt type of graphs that seaborn can produce using something like this:</p>
  
  <pre><code>power_t_series = sDF.pitch
  velocity_t_series = sDF.velocity
  duration_t_series = sDF.duration
  
  figure, axes = plt.subplots(nrows=1, ncols=2)
  figure.set_size_inches(20,10)
  b, g = sns.color_palette("muted", 2)
  
  sns.tsplot(power_t_series, color = b, ax=axes[0])
  sns.distplot(power_t_series, color = r, ax=axes[1])
  </code></pre>
  
  <p>But when specifying jointplot, is top-down the only way to display multiple charts of this nature? Here is the code and the error:</p>
  
  <pre><code>figure, axes = plt.subplots(nrows=1, ncols=2)
  figure.set_size_inches(20,10)
  b, g = sns.color_palette("muted", 2)
  
  sns.jointplot(power_t_series, velocity_t_series, kind='kde', ax=axes[0])
  sns.jointplot(power_t_series, duration_t_series, kind='kde', ax=axes[1])
  </code></pre>
  
  <p>I get this:</p>
  
  <pre><code>      3 b, g = sns.color_palette("muted", 2)
        4 
  ----&gt; 5 sns.jointplot(power_t_series, velocity_t_series, kind='kde', ax=axes[0])
        6 sns.jointplot(power_t_series, duration_t_series, kind='kde', ax=axes[1])
  
  TypeError: jointplot() got an unexpected keyword argument 'ax' 
  </code></pre>
  
  <p>Is there any way to plot this type of chart side by side, since ax is not an argument accepted by jointplot()?</p>