title: python bokeh plot how to format axis display
body: <p>the y axis ticks seem to be formatting numbers like 500000000 to 5.000e+8. Is there a way to control the display so that it displays as 500000000?</p>
  
  <p>using python 2.7, bokeh 0.5.2</p>
  
  <p>i m trying out the timeseries example at bokeh tutorials page</p>
  
  <p>The tutorial plots 'Adj Close' against 'Date' but i'm plotting with 'Volume' against 'Date' </p>