title: Seaborn Heatmap Colorbar Label as Percentage
body: <p>Given this heat map:</p>
  
  <pre><code>import numpy as np; np.random.seed(0)
  import seaborn as sns; sns.set()
  uniform_data = np.random.rand(10, 12)
  ax = sns.heatmap(uniform_data)
  </code></pre>
  
  <p>How would I go about making the color bar values display in percent format?
  Also, what if I just wanted to show the first and last values on the color bar?</p>
  
  <p>Thanks in advance!</p>