Update lex.l

Add commentaire .
Change program
Update lex.l
Correction du lex.

Correction commentaire : # (existe en double)
Déplacement des types de commentaires sous les constantes (Pour priorité du parsage)
Delete README.md
Update lex.l
Exemples Florian
ajout - Exemple3 & prog_min [Nico]
Merge branch 'dev' of https://github.com/Wescoeur/Projet-Compilation into dev
Update Yacc/Lex + Exemple 2 de Florian
Mise à jour exemple 2 (Flo)
commit obligé
Modification des fichiers d'exemple
Merge branch 'dev' of https://github.com/Wescoeur/Projet-Compilation into dev

Conflicts:
	exemples/florian/2
	prog
	src/lex.c
ajout de l'exemple 9
MAJ exemple 3 (Flo) + Yacc
Merge branch 'dev' of https://github.com/Wescoeur/Projet-Compilation into dev
ajout exemple 4
Conflicts:
	prog
	src/lex.c
	src/yacc.c
	src/yacc.h
Merge branch 'dev' of https://github.com/Wescoeur/Projet-Compilation into dev

Conflicts:
	exemples/florian/3
	prog
Merge branch 'dev' of https://github.com/Wescoeur/Projet-Compilation into dev
Modification de l'exemple 4
Conflicts:
	prog
	src/lex.c
commit avant Ronan (yacc modifié)
Merge branch 'dev' of https://github.com/Wescoeur/Projet-Compilation into dev

Conflicts:
	exemples/florian/3
	prog