Split libbookbuilder.py into three files. Getting towards refactoring out the pstikz conversion from html
Rearranged some functions to seperate pstricks and tikz from html, added some utility modules, cleaned up requirements.txt
changed image generation to xelatex, pdf images are now cached with pngs
updated readme
Incremented version to 0.2
Fixed image generation bug
Merge pull request #3 from Siyavula/xelatex-mod

Xelatex mod