la modification du livre avec la creation du chapitre 1
Merge branch 'master' of git://github.com/imie-source/DL09_G1
Merge branch 'master' of git://github.com/imie-source/DL09_G1

Conflicts:
	livre
                                                                                                                                                                                                            Merge branch 'master' of git://github.com/imie-source/DL09_G1

Conflicts:
	livre
modif chap 4
Merge branch 'master' of git://github.com/imie-source/DL09_G1

Conflicts:
	livre

chap 4