embeds LaTeX style file inside README file

This will remove the dependence to latex-template package. Work in progress...
embeds LaTeX code for lectures
embeds also beamer style
change README following recent changes
adding git commit version at the bottom part of lectures
kozmetix
provide target to build all pdf
remove sty files
first load then tangle
Merge xgarrido's branch

Conflicts:
	slides/Makefile
	slides/slide_amitie_surcharge.org
	td/Makefile
adaptation aux nouvelles classes LaTeX
typo
Simplification du cours sur l'héritage