title: how to make the text size of the x and y axis labels and the title on matplotlib and prettyplotlib graphs bigger
body: <p>I set the figure size of a matplotlib or prettyplotlib graph to be large.
  As an example lets say the size is 80 height by 80 width. </p>
  
  <p>The text size for the plot title, x and y axis labels (i.e. point label 2014-12-03 and axis label [month of year] become very small to the point they are unreadable.</p>
  
  <p>How do I increase the size of these text labels? Right now I have to zoom in with the web browser to see them.</p>
  
  <p><img src="https://i.stack.imgur.com/NjDDe.png" alt="enter image description here"></p>