Fix #287 and add a note about how to circumvent the line number line height problem in IE.
Fix #287 and add a note about how to circumvent the line number line height
problem in IE.

erickt/pygments,erickt/pygments,erickt/pygments,erickt/pygments,erickt/pygments,erickt/pygments,erickt/pygments,erickt/pygments,erickt/pygments,erickt/pygments,erickt/pygments,erickt/pygments