Embedding Parser: Implementing Renderer

MD4C project contains a simple utility, md2html, which converts Markdown input to the corresponding HTML output.

The utility uses MD4C parser to analyze the input. The renderer implementation is in md2html/render_html.c. Applications which want to convert Markdown to HTML can reuse this implementation more-or-less without any major change.

Given how relatively trivial HTML renderer is, it can also serve as a good example code how to implement your own renderer.