Hopefully addressed the problem of the placeholder ("Rendering..") image not displaying when clicking on the "Show" button.  This is done using a setTimeout() from a function that just updates with the placeholder image, with the setTimeout callback being the routine that actually draws the chart.
Modify the generation of the X axis labels such that it doesn't generate an extra highlighted hash (which comes with another veritical white line on the chart) after each intended hash/label.
Merge pull request #21 from Lerrissirrel/bugfixes

Bugfixes