Add stylesheet support

[corylanou]

When doing basic projects, it would be nice to have some level of style sheet support so you could see what the end product will look like in production.

I see a couple of options here:

• Add a command line argument that will dynamically insert a style sheet provided at compile time into the rendered output.
• Provide a set of style sheets that could be used automatically like github flavored, etc. so by default you have some nicely formatted output.