Updated docs

src/figs/dispatch_1d.png

src/figs/neighbours.png

src/text/00-preface.md

src/text/02-introduction.md

src/text/03-programmation-parallele.md

src/text/04-mpi.md

src/text/05-futhark.md

src/text/06-mpi-x-futhark.md

src/text/07-automate-elementaire.md

src/text/08-jeu-de-la-vie.md

src/text/09-lattice-boltzmann.md