Join GitHub today
GitHub is home to over 20 million developers working together to host and review code, manage projects, and build software together.
Convert to using sphinx-doc #44
http://sphinx-doc.org/ is ideal for this sort of thing - it takes reStructuredText input and converts it into many different formats, including multi-page HTML or single-document PDF.
rst is better than markdown for large scale documentation - the source code just as human-readable, comparatively easy to write, but feature-complete in that you can customise it arbitrarily with your own templates etc.